Feng shui is very very VERY helpful
Start by cleaning your room and the energy work said by Aleksios. You can use the sun mantra as well to purify the room/house. Now I want you to look up a Bagua Map. Identify each section of the room in relation to the cardinal points. Essentially find east, west, north and south in your room.
Now that you know the positions, its time to rearrange the room accordingly. For example I have a bookshelf in the knowledge area. Also, remove any pictures or symbols that harm you subconsciously. You dont want a gangster poster in the career section. If your room is an odd shape, this complicates things. For now focus on making more room and getting rid of useless items.
You also want to have your bed facing the door and pushed to the nearest corner. Dont have your feet facing the door. You want to be able to see the door easily but not directly in front. This applies to most spaces. Having your back to the door brings bad luck and unexpected energy.
Lastly, utilize crystals. I have many crystals on my window sill that receive sunlight during sunrise and the rest of the day. This is my meditation, creative, and calming spot in my room.
I highly recommend buying a good feng shui book to help you with the aspects I didn't not mention here like room shape, color, furniture position and so on.