Hi, Buddy,
Sorry for writing in English. When I saw your post, I just recalled when my Mom was sick 7 years ago, my life was a mess , my job was unacceptable or dispointing, my co-workers gave me [censored], everyday I ate my tears into my stomach without love. Even nobody consoled me. I asked myself where the End was? Every morning I hoped that I would never wake up again.
Time is flying by. 7 years have past. Now I believe that my Mom is very happy in another world. It is the best for her. My life and emotion are not very smooth either, I always complain about life, lover and friends. I accept all of those as my life with smile. Accept those things that couldn't be changed, change that you can change! Focus on and seize the present. You will be happier. Don't think too much.
Cheer up.