First in order to install Mountain Lion, you need to be sure you are using a MAC that is compatible and is running either OS X 10.6.8 (Snow Leopard) or any version of 10.7 (Lion). For a list of Mac equipment compatible with Mountain Lion, visit http://www.apple.com/osx/specs/
If you find your MAC is compatible, there is one other place to check and that is RoaringApps.com. This site has a comprehensive list of software applications indicating their compatibility to both Lion and the new operating system Mountain Lion. Be sure those applications you use on a daily or regular basis will still open once you upgraded to Mountain Lion. Visit the list at http://roaringapps.com/apps:table
If your software is not compatible at this time, give it a month or two and check back either with the software manufacturer or RoaringApps. Sometimes it takes a little bit of time for software manufacturers to upgrade their products.
If you find your computer is compatible and no issues with the software and apps you are using, I would still give it a little time before upgrading. With any new release, there are bound to be some issues and just being a bit patient will work in your favor as they work the kinks out and service patches are issued.