How to not go on tilt?

[latvian7]

once again, i tryed to get him off flush draw really late in 0,10$ but he still calls..busted 44 my position was 7th before i messed with 1st guy in chips..

PokerStars No-Limit Hold'em Tourney, Big Blind is t16000 (8 handed) Hand History converter Courtesy of PokerZion.com

UTG (t89361)
UTG+1 (t259800)
Hero (t208334)
MP2 (t192048)
CO (t3431)
Button (t54524)
SB (t107840)
BB (t212136)

Preflop: Hero is MP1 with A[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t48000</font>, <font color="#666666">4 folds</font>, BB calls t32000.

Flop: (t91200) 5[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t158734 (All-In)</font>, BB calls t158734.

Turn: (t408668) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

River: (t408668) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: t408668
Seat 9: Adrietje (big blind) showed [4d Kd] and won (434268) with a flush, King high

How to NOT go on tilt? i mean i was guaranteed Final table..
This happened about 8mins before i made this post. Today.