Looking for Discipline in the Big Blind

I got in seven more sit 'n go tournaments on Friday and Saturday. I decided to stay down at the $1.20 level and see if I can make a profit of $20 there, then move up to the $3.40 tourneys. My results were one 1st, two 2nd, a 3rd, a 4th, 5th, and 7th. Four out of seven in the money means my discipline is paying off.

I'm still finding one place where I'm having problems, the discipline to lay down a hand that I know is beat. This usually happens when I'm in the big blind and everyone limps in and allows me to check in with any two cards. I'll usually hit middle or bottom pair and find it hard to let it go. Here's an example.


PokerStars No-Limit Hold'em, $1.00+$0.20 Tournament, 10/20 Blinds (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

UTG+1 (t1490)
MP1 (t1590)
MP2 (t1210)
MP3 (t2170)
CO (t1740)
Button (t1300)
SB (t1100)
Kosh (BB) (t1480)
UTG (t1420)

Kosh's M: 49.33

Preflop: Kosh is BB with ,
2 folds, MP1 calls t20, MP2 raises to t100, 4 folds, Kosh calls t80, 1 fold

Flop: (t230) , , (2 players)
Kosh checks, MP2 bets t160, Kosh calls t160

Turn: (t550) (2 players)
Kosh bets t275, MP2 raises to t550, Kosh calls t275

River: (t1650) (2 players)
Kosh checks, MP2 bets t400 (All-In), Kosh calls t400

Total pot: t2450

Results in white below:
Kosh had 9, Q (one pair, Queens).
MP2 had A, Q (two pair, Aces and Queens).
Outcome: MP2 won t2450

I knew in my head I was probably beat with the Ace and King on board, but my hand kept clicking the call button. This hand caught my eye on Friday and I worked on it Saturday. I think it paid off with good results in Saturday's tournaments.