I hate to disagree with the others but I don't think that it is very easy or straightforward at all.
-Tried affirmations, meditation and stuff like that and it didn't work. It felt like every morning when I was doing it I was fighting against the real sad stuff happening every day regarding hair loss. Roughly I would say positive things and call myself a winner every morning all while life would deem me a loser the rest of the day. Life won. Maybe if you do this positive thinking stuff literally every hour you'd have a chance but if not, you'll eventually lose ground with it.
-I've ended up in therapy and I'm getting the feeling that the number of sessions I have on my account will not be enough to help me and I think that the therapist even suggested that to me .
-Overall I don't only feel sad and negative things nowadays but I feel like these things are not strange or extreme but completely normal and correct in light of my situation.
-Being busy works until you're not.