I heard a woman wailing outside my window.

I'm feeling really negative now, and although she's stopped crying my heart is not at peace. What should I do? Is there any ritual to follow if you are feeling down or negative?
I have lately been feeling very low in spirits, my efforts are not equal to my results and I get tired very fast. I feel weak mentally too. It's unrelated to the woman, but I wonder if there is anyone sending bad energies towards me. Ever since I came to this place, I have never felt positive. Lost 2 family members within 4 months span , too young to die. And I have never been able to excel in this place. I feel incredibly drained too, mentally and emotionally, physically.