Ok, so it seems every time I get a big stack in MTT's I end up spewing my chips off. I make moves that I wouldnt with an average stack and I usually end up shooting myself in the foot. Its like whenever i get alot of chips I feel that i need to be the table captain. I am wondering if you guys have any advice on keeping even keeled with a big stack? How can I be aggressive yet not spew?

Thanks

Bevo54