It's easy to level the playing field. Here are a few pro tips:
1. Bring liquor/drugs to session.
2, Give it to everyone but yourself.
Alternatively:
1. Get a session player to dress like you and wear a mask.
Second alternate concept:
1. Bring friend to session.
2. Have friend say things like, 'Man, you freaking nailed that part, you're the best one in this band', and 'Par-Tay!' following your takes (works well in conjunction with the liquor/drugs tip).
Third alternate concept:
1. Sit next to the engineer during everyone else's takes.
2. Frown often and make comments the other musicians can't hear. Face-palms also work well. Tell the singer, 'Don't worry, the engineer says he can correct that take with auto-tune'.
Fourth alternate concept:
1. Distract them with naked tattoo models.