"I have developed a strategy playing with my deck. I try to hope that early on I an get my Gengar up and running and hope that I get my Mr. Mimes also. I use Jigglypuff to take out any Mr. Mimes. I use my psychic cards to defend my Hitmonlee and Hitmonchan. My deck has not fared very well, so any help will be appreciated.

BTW: I am 12 years old and live in Louisiana.

2 Mr. Mime
3 Gastly <F>
2 Haunter <1B/1F>
1 Gengar
1 Hitmonlee
1 Hitmonchan
3 Onix
2 Doduo
1 Dodrio
1 Jigglypuff
1 Kangaskahn

Trainers

3 Gambler
2 Bill
1 Super Potion
2 Professor Oak
3 Plus Power
2 Super Energy Removal

Energy

15 Psychic
15 Fighting
02 DCE

I suggest you take out one Onix and add a Jigglypuff. Since you use him to take out Mimes it will help you if you have more than one. Lets see now... I'm going to leave the Hitmonlee and Hitmonchan at 1 each, since I assume you use them kindof like "Hitmon*.*" and you do have two of them total.

I bet that you use Dodrio for the retreat aid. Add one more Doduo and one more Dodrio. If you manage to get them both out, all the better.  Now you can add 1 more Kangaskahn.

1 of anything probably won't do you a whole lot of good, so remove the lone Super Potion. 

Ok. If I just leave it the way it is now, you'll have 64 cards, so somewhere we have to get rid of 4 cards. Honestly, I don't see there to be a problem removing 2 Psychic, and 4 Fighting energys. I can see you saying right now, "But, Pokèmon Lady, that's 6 cards!" Yup. Take out 6 and put in 2 DCE. Now, you're only down 2 energies total from the 30 you started out with.

You and I both know that your deck wasn't magnificent to begin with. Try these changes against your friends and in play for a little while and then get back to me and let me know if you need more help with it.