I don't want to talk too much anymore!! How do I stop, seriously it's hard.?

Please help, I feel like I annoy some people at work. Not so much at school because we are forced to talk a lot in the MBA program so it's a good thing. But my father says that I'm annoying! I want to be close to him like we used to be! Plus when I drink I start getting insecure and asking dumb questions about my appearance, age, etc. To my friends..and they say that they love me but that I should not ask such things and just enjoy life...I'm obviously very immature because I am almost 30, and getting a masters degree and still have pathetic social discrepancies! Help.