My biggest leak, or what I perceive as my biggest leak, keeps changing. This is probably a function of still learning the game.
A month ago it was playing too many mediocre holdings from early or mid position.
Then it was going too far with
hands after completing from the SB (now SB is one of my most positive net positions, something weird there).
Now the biggest issue seems to be limping from the button or cutoff behind multiple limpers. I need to 1) raise if I've got a decent hand, 2) raise if I don't have a hand but think I can take the pot, 3) fold, and only limp if I've got a small PP or connectors.
Maybe the leaks aren't changing, more likely they were all there from the beginning and I just have to deal with them one at a time.