Raise or fold on turn??? I suck at folding

[RiverTheNuts]

Party Poker 2/4 Hold'em (10 handed) converter

Preflop: Hero is CO with Q[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, MP2 calls, MP3 calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, MP2 calls, MP3 calls.

Flop: (7.50 SB) 8[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
MP2 checks, MP3 checks, <font color="#CC3333">Hero bets</font>, MP2 calls, MP3 calls.

Turn: (5.25 BB) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">MP2 bets</font>, MP3 calls, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">MP2 3-bets</font>, MP3 folds, Hero calls.

River: (12.25 BB) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP2 bets</font>, Hero calls.

Final Pot: 14.25 BB

Results in white below: <font color="#FFFFFF">
MP2 has 8s 5c (two pair, eights and fives).
Hero has Qd Qh (one pair, queens).
Outcome: MP2 wins 14.25 BB. </font>

[brazilio]

I'm never folding, and I'm usually raising, calling down once 3-bet. Mid pairs and top pair crap like that will bet out thinking you're definitely on overcards. I need a good read before I'm folding that, like, ever.