How to lose man boobs in around 30 days?

Ok so this is the problem. My mother is getting married again and we are going to Cancun for the wedding. I want to be able to take my shirt off and just relax but i'm so judgmental about myself. Man boobs runs in my family as my uncle had the same problem. I am only 10 pounds over weight and you can't really even tell im over weight. The wedding is July 27th and I need to learn how to lose man boobs right away. I just want to trim them if anything. Because I swear they look like a cone or something. I'm 15 and weigh 170 lb. I want to work out and I have been but I seem to lose interest. I have been trying to lose weight all my life but I always seem to give up because I lose interest. How can I gain interest and what is the best way to lose man boobs. Thanks for the help.