Hmm. Have had a couple break even sessions as I think I may have gotten off track in a few situations like these:

#12 No-Limit Hold'em, $0.25 BB (6 handed)

SB ($10.76)
BB ($28.53)
UTG ($26.83)
MP ($17.77)
Hero (CO) ($31.65)
Button ($25)

Preflop: Hero is CO with K, A
2 folds, Hero bets $0.85, 1 fold, SB calls $0.75, 1 fold

Flop: ($1.95) 7, A, 5 (2 players)
SB bets $1.95, Hero calls $1.95

Turn: ($5.85) 4 (2 players)
SB bets $5.85, Hero raises $28.85 (All-In), SB calls $2.11 (All-In)

River: ($21.77) A (2 players, 2 all-in)

Total pot: $21.77

Results:
SB had A, 5 (full house, Aces over fives).
Hero had K, A (three of a kind, Aces).
Outcome: SB won $20.69

Wow, as crazy as this is going to sound I just realized something while posting this. It has to do with comparative psychology or something but on the Turn I looked at my stack size compared to his and thought, "I'm beat but screw it" which, irrationally, I don't think I would have done if I had started with 100bb or less. I'll have to watch out for this in the future.