Loosing the first couple of hands...

With couple I mean like 200-300 hands of a session. I always tend to do this and since I have done it alot I really doubt its because of "thats the way poker is". Whenever I am starting a playing session (my sessions is somewhere around 1k hands) I go a few BB's back in the first 200-300. Not that many BB's but enough to make me go damn. Let's say on average 25-30 BB. Then as time move along I usually end up on a +50bb for the session. After reviewing alot of my latest sessions I find this to be the case in alot of them.

Loosing early, winning the more you play... Am I just a really bad player in the beginning when I am not "warm" or is there any psychological thingy behind this? Have this been talked about earlier? I see this as one of the things I would like to improve the most of my game and would like to know if there is any background to it or if I just suck when I am cold [img]/images/graemlins/smile.gif[/img]

Thank you for your time