Always starting out behind...

[idiom8]

I play almost exclusively brick and mortar 1/2 NL. My sessions are generally 4-8 hours long and i come out ahead 75% of most sessions. My question is this: even though i come out ahead most of the time, i seem to always begin by losing a buyin. Now i have experimented with different size buyings including the 300 max and 100 min. I have also bought in for 200, and bought in for 200 and then reloading 50 or so dollars at a time to keep my stack at a decent level. No matter which method it seems i'm always stuck 200-500 before i make my comeback and normally win a couple hundred.

I'm puzzled by this, and what i may be able to do to get off to better starts.

thanks,

OP