I've noticed I lose a lot of 60-80BB pots like these...should I cut it out?

Party Poker No-Limit Hold'em, $ BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($0)
UTG ($46.47)
MP ($66.07)
Hero ($46)
SB ($35.55)

Preflop: Hero is Button with 5, 6. UTG posts a blind of $0.50. SB posts a blind of $0.25.
1 fold, Hero raises to $2, SB (poster) calls $1.75, UTG (poster) calls $1.50.

Flop: ($6) 6, T, 4 (4 players)
SB checks, UTG checks, Hero bets $4, SB folds, UTG calls $4.

Turn: ($14) 7 (3 players)
UTG bets $5, Hero calls $5.

River: ($24) 9 (3 players)
UTG bets $15, Hero folds.

Final Pot: $39