Problems don't just appear overnight. They develop over a period of time. So likewise it cannot be an instant thing to remove those problems in a day, week, or month. If it took years to develop something then it's going to take a while to remove it or change it. Spell work very rarely produces instant results, especially for physical things.
Do you think a weathered tree would have its bark instantly restored to looking like the day it was a sprout just because someone pumped a ton of healing energy into it all at once? It would still take time.
Persistence and perseverance are vitally important. Think of it like a test for yourself. Are you able and willing to stay true to your goals? Are you going to stay the course in order to manifest your dreams into reality?
If not then I guess your dreams weren't important enough to you, and they will die. You won't reach your goals if you give up.
I've been doing workouts every day for a long time, drinking nothing but water, doing cardio, and eating well. And yet I still have belly flab and other fatty parts of my skin because I did that to myself over the course of nearly two decades during my childhood. I lost the weight, and I've definitely worked hard to tone myself up, but I still don't have a glamorous looking beach body yet. Am I giving up? Not at all. I keep going. I know that one day I will reach my goal, and my body will look exactly how I want it to look.
Henu gave you some great advice. If you are struggling with motivation then you could be right that it's enemy curses. He gave you what you asked for, the page for returning curses. Now you just have to pick yourself back up and continue on. Don't give up, okay? Believe that it's all worth it, and that the future you want is worth the effort.
It could also be a little bit of burnout, fatigue, or too much spiritual energy to handle before you're used to it. We are advised on the JoS that if we have more spiritual energy than we can currently handle then we can request a Demon to take some of it. That can sometimes help to balance us.
About the rotting effect... again I have to go with Henu on this. Even if we clean ourselves, it doesn't do everything because without a built up Aura of Protection, we still get exposed to the energy around us in the environment, from people we interact with and their own thoughts/problems/mentalities, etc... and cleaning all of that away is much more of a chore without a strong Aura of Protection. What you could do to banish depression/lack of motivation and stuff like that is meditate on the Algiz rune, even carve it. It goes really well with black tourmaline as stated on the page about runes. Very protective stone and rune. You should also clean and empower your other chakras. Look at the pages on the chakras and the planets that rule them along with that planet's zodiac sign, and the parts of the body associated with these. Depending on where the rotting effect is in the body is probably where you should focus chakra wise (as in what part of the body that chakra rules).
So for example: Mars rules the Sacral Chakra and the Zodiac Sign of Aries (which rules the head).
From the page on Mars Planetary Square - Parts of the Body ruled by Mars: The head and face, the brain [along with Mercury], sex organs and red blood cells.
So if the rotting effect is in your head then you could try focusing on your Sacral Chakra and doing some Mars related magick.
As for the skin itself. Venus rules the skin in the cosmetic sense. For the health of the skin, I believe that is ruled by Saturn.
This is from the page of the Saturn Planetary Square: Parts of the body ruled by Saturn: Bones, knees, the ears (hearing, balance), the spleen, the skin, the teeth.
Diseases: Chronic wasting diseases, diseases of the skin, bones and teeth, deafness, vertigo, tinnitus (ringing in the ears), depression, blockages, blood clots, stagnation, kidney stones, arthritis, immune deficiencies.
So you would want to work on your Base Chakra if it's something to do with your skin.
The reason I'm making assumptions with this, and giving this particular advice is because you only mentioned that you have been working on your Solar Chakra and 3rd Eye for all these months. The way you said that suggested that you were cleaning and empowering those two exclusively, and not the others.
And also like Henu said, Yoga will help you so much. And another thing is vibrating the mantra Satanama for 10 to 15 minutes each day followed by an affirmation will do wonders. You vibrate "SA" while holding your thumb to your index finger, then you switch your thumb to your middle finger and vibrate "TA" and then thumb to the ring finger while vibrating "NA" and finally thumb to the pinkie finger while vibrating "MA"
You repeat that mantra vibration just like that while switching the finger positions.
Anyway, I really hope you are successful. I know what it's like to live in a body when it's painful (and/or not what you want it to look/feel like). I know all too well. Our bodies are not supposed to feel like a torture chamber. Good luck to you. I know you can do it.