Mantras for extraordinary wit, humor, charm and communication skills?

Which mantra can I chant every day for all of the above? Please help. I am somewhat an introvert, and people mostly find me boring. I want to transform and change myself. The people around me have such great wit and humour that I always feel anxious and inferior, as I usually have nothing to contribute except laughing at their jokes. When they mischievously make fun of me, I can't come up with a comeback because i can't think of anything good.