Bad beats are costly- suckouts are profitable.

Become better at suckouts and avoid bad beats. You need to really push hands like backdoor flushes, gutshots and underpairs/ undercards hard in order to become the Suckout King. Following the same line of reasoning you should fold whenever you know you are in front.

On a more serious note, maybe you are not pushing your edges hard enough? If you only push 70/30 situations and folding 55/45 situations your good hands need to hold up often to sustain a profitable winrate.

Couple of thoughts:

- You grind and grind until you lose a big pot- then quit.

- Losing feels worse than winning feels good.

- Suckouts are common for fish and sharks, not for TAG fish

- Everything is possible in poker. Sometimes you can not lose even how hard you try.