Hate to be that guy, but what if you drew confidence out of other things? Height is one of those things that is very hard to "fix", or extremely painful and likely expensive as well, as in the case of shin surgery.
In my opinion your best bet are tall shoes such as these http://www.tallmenshoes.com/
You gain about 3 inches, which is nice, but it remains to be seen how they look on you, or whether people can easily tell you're walking on stilts.