Step 1: drink a lot of booze, hard liquor is preferred.

Step 2: get a walking stick

Step 3: climb said mountain (that is not one of the stupidly huge ones; i.e. Mt Kiliminjaro or similar to that)

Step 4: If you are afraid of falling from a great height like I am, rage while climbing and/or keep cool. or only go up halfway

Step 5: When at preferred destination, revel in the sights and flip off the sky or some random guy who doesn't have a gun