Hi,

One of my leaks is not to be able to do right thing on the river (I tend to call when beaten).
Another one is to call raises like this against aggro players, but I'm working on that as well..

How about this one? Does he have a set or AK?

$100 NL Texas Hold'em
Table Table 126880 (No DP) (Real Money)
Seat 4 is the button
Total number of players : 4
Seat 2: Hero ( $213.60 )
Seat 6: UTG+1 ( $128.35 )
Seat 4: UTG ( $258.90 )
Seat 1: SB ( $50.50 )
SB posts small blind [$0.50].
Hero posts big blind [$1].
** Dealing down cards **
Dealt to Hero [ Js Qs ]
UTG raises [$4]
SB folds.
>You have options at Table 127031 (No DP) Table!.
Hero calls [$3]
** Dealing Flop ** [ Ks, 9d, Qc ]
Pilou65 has joined the table.
Hero checks.
>You have options at Table 125993 Table!.
UTG bets [$8]
Hero calls [$8]
** Dealing Turn ** [ Th ]
Hero checks.
>You have options at Table 127031 (No DP) Table!.
UTG bets [$21]
Hero raises [$42]
UTG calls [$21]
** Dealing River ** [ Kh ]
Hero checks.
UTG is all-In.
Hero folds.
UTG does not show cards.
UTG wins $312.40

Is calling +EV here?

Raise the turn like a man. As played, the river fold is probably good.