I HATE Losing! Help with this hand

[AtlBrvs4Life]

Alright, I am on the worst streak of losses in tournaments I have ever been on. I decided to stop doing the 30+3 party tourneys and switch to 10+1 because I was losing so much. However, it seems I can no longer even win the $10 tournaments that I used to dominate. Here is the hand I busted out on in the most recent tourney. Where did I go wrong.

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (8 handed)

UTG (t455)
AtlBrvs4Life (t1055)
MP1 (t2290)
MP2 (t755)
CO (t1220)
Button (t715)
SB (t785)
BB (t725)

Preflop: AtlBrvs4Life is UTG+1 with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img].
UTG folds, <font color="CC3333">AtlBrvs4Life raises to t75</font>, MP1 folds, MP2 folds, CO calls t75, Button folds, SB folds, BB calls t60.

Flop: (t235) 5[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="blue">(3 players) </font>
BB checks, <font color="CC3333">AtlBrvs4Life bets t175</font>, CO calls t175, BB folds.

Turn: (t585) 8[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players) </font>
<font color="CC3333">AtlBrvs4Life bets t250</font>, <font color="CC3333">CO raises to t970 (All-In)</font>, AtlBrvs4Life calls t555 (All-In).

River: (t2360) 8[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players, 2 all-in) </font>

Final Pot: t2360
<font color="#990066">Main Pot: t2195 (t2195), between AtlBrvs4Life and CO.</font> &gt; <font color="white">Pot won by CO (t2195).</font>
<font color="#990066">Pot 2: t165 (t165), overbet by CO.</font>

Results in white below: <font color="white">
AtlBrvs4Life shows As Ac (two pair, aces and eights).
CO shows 6s 6d (straight, nine high).
Outcome: CO wins t2360. </font>

I really did not believe he had a 6 due to his call of my preflop raise and the manner in which he played the hand.