From what you said, the windows in your home are too big or too many, and the glass takes up too much area, which not only makes you feel insecure, but also makes your subconscious mind constantly in a state of tension. And it is easy to lose energy and vitality. In turn, it leads to a bad mood, confusion in work and study, and many setbacks will inevitably follow. You said it was not good to turn your back on the door. You should trust your feelings. This feeling is objective. The most basic thing in Feng Shui is to feel smooth. If you always feel uncomfortable, how can you concentrate on your work and study?
The information you provided is too abstract and far from enough. Windows can be covered. In other respects, you'd better find a feng shui master to help you see how to adjust it. You know, if something goes wrong in one link, it is easy to have a vicious circle. Pay attention.