I get extremely paranoid on marijuana, and if I don't it just makes me feel lazy and tired. Not sure if it's genetic or what but have never been able to enjoy it.
Also, think up some things you'd like to try while under the influence... Do you have a favorite album or movie? Many things may be found to be invigorating and enjoyable in a way you couldn't have described before.
That said, I can tolerate low-dose edibles. And, I believe most people who are in my shoes could enjoy it that way. Unfortunately, it's nearly impossible for most of us on the Eastern part of the US. The edibles I tried were brought back from people who went to Colorado.