How do you overcome your fears?

I overcome my fears when I get some activity and forget it in my mind. Sometimes I ignore it.

Some fears are quite rasonable, and may be important for my survival. Like fear of snakes, lions, strangers in dark alleys. Other fears that are not so helpful (like fear of flying, accidents, war etc) but that may cripple my life is another thing. If possible I'll check to see what the liklyhood of them coming true are. Most of the time that will do the trick. If not I'll ignore it, or try to think of something else. If I did have a fear that was harmful to my life and i could not shake it on my own I'd seek professional help.