I would like to know in what way they are harassing you to provide further assistance.
First of all, you are not helpless. The typical enemies that try to harass us aren't as powerful as your fear may have you believe. And malicious entities can still be dealt with. A strong aura can naturally repel negative energies so yes it is very important that you build upon it and I would like for you to double your AoPs for now.
In addition I want you to regularly
spin your chakras as this will rid them of any negative energy sticking to them from these entities and the faster they spin and the brighter their colour they are the better they can protect themselves. Also you should be regularly doing the
foundation meditation otherwise you have little to no energy to direct for your workings to give positive and strong results.
Also always remember to
clean your aura twice a day as a regular routine, and in the event you come into contact with any negativity including these entities then clean your aura each time you do in addition to the routine.
Don't let them hinder your spiritual progress and don't let them force you to make decisions. Astral entities are not bound to a specific place, if you quit your job chances are they will still be able to find you again. I would suggest that you see them as an opportunity to practice your self-protection and begin building up your defenses.
The enemy wants to deter you from this path. Do NOT let them succeed. In time as you grow stronger they will be nothing more than minor nuisances as they are with me as well as many of us who have been doing this for years and years.