I know exactly how you feel, I've definately been there a few times myself. Do you feel like you're just sick of the day-to-day routine, like you want to do something totally different? Lets face it, life can get really old if you've been doing the same thing day after day.

Maybe you should try meditation, the opposite of doing something (which bores you). Salvia Divinorum (it's legal mods, its legal!) is also made for meditation, they go hand in hand and if you really know what you're doing, you'll find out what an amazing tool it is. Most people who hate it say so because they don't understand that it's not for getting "high" or "messed up", it's a powerful and valuable tool that you need to know how to use.