3 bad ideas. Bike through india: tons of people travel everywhere and do pointless stuff, such as biking in idea. Like a lot of people I did it for a while. You can't do anything really interesting because all your time is devoted to basic such such as finding what to eat, where to sleep, where to go, etc. You get very tired.
Open a call girl ring: You get laid. Eventually you run out of fluid and have no interest anymore. You feel weak. Pointless.
Learn how to drive a race car: lol.
You can't try to understand the universe with physics or math because you are limited intellectually. Everyone is limited, only to different degres. You never were a creative type and you don't have anything to say artistically. No one will listen to you anyway.
The only valuable thing that there is to do is to sit into your favorite meditation position, and push through the pain until you die or gain something great. Just like Jesus who meditated 40 days in the desert and a bunch of others also. Eventually all kinds of weird shit happens in your brain and you feel great. There is something that flows into your body and it's pure joy. You are a weirdo and no one listen to you. No one ever did anyway.