When I was a limit player these kind of hands seemed to play themselves. You just bet hard and no-one ever believed you had it.

Now I find them tougher. I either win a small pot (I bet and everyone folds) or I lose a big one (someone flops a boat or has me out-kicked). Am I just playing scared? If so, where should I have put them to the test?

Paradise Poker No-Limit Hold'em, $0.50 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($102.70)
Hero ($110.95)
UTG ($102.20)
MP ($45.90)
Button ($121.20)

Preflop: Hero is BB with Q, 5. SB posts a blind of $0.50.
UTG calls $1, 1 fold, Button calls $1, SB (poster) completes, Hero checks.

Flop: ($4) 5, 5, A (4 players)
SB bets $5.5, Hero calls $5.50, UTG folds, Button folds.

Turn: ($15) 4 (2 players)
SB bets $6, Hero calls $6.

River: ($27) 9 (2 players)
SB bets $10, Hero calls $10.

Final Pot: $47