Calling down too much

[Starzinger]

Hi,
I dont really have any hands to post, but i hope you can help me anyways.
I think i call down too much. My aggression factors are really low, and even if i dont look at my PT numbers, i feel like i call down in too many situations. Now, i cant really show any hands, since i either can spot the quite easily myself in PT, or i do it without knowing it at all.

So, what im asking for, is some sort of advice for what you think i should look for when i play. Surely more people than i have had this problem, and know what problems they found?
If i am to take a guess, i would have to say that it has to do with overcards/overpairs, and HU situations.

And oh, i cant seem to find those raise-fold-to-a-threebet situations that everyone else seems to see so easily. =)
I play mostly at party 2/4

Help please?