If this describes you and you are thoroughly bored with your current career, perhaps you should consider throwing caution to the wind and trying your hand at being a standup comedian. If, after thinking about it for awhile, you find this idea highly appealing, you should probably treat becoming a comedian as you would any other career. You can just step on a stage and start telling jokes, but your chances of success will be much higher if you take the time to learn how to create and present a routine that will grab an audience's attention and tickle their funny bones. Most cities now have improvisational theaters and many of them offer workshops.
Some colleges also offer improv or comedy classes.
If you are wondering what improv is, let me quote the folks at the Improvisational Comedy Group in Nashville, Tennessee. If you have taken advantage of every class and workshop in your local area and are still not feeling ready to step onto a stage, you can consider hiring a comedy coach. A professional coach can assist you with the creation of a routine and teach you how to deliver it effectively. For most fledgling comedians, the next step is to find comedy clubs that have open mike nights. Open mike nights are available to anyone with enough guts to get up in front of an audience and try out a routine.