Why do you need to feel safe? Are you really that afraid of living?
Do not worry over danger. Concern yourself only with your own footsteps.
There was a popular poster back in the 60' that read "Yeah though I walk through the valley of death I shall fear no evil... for I AM the meanest S.O.B. in the valley. <br />
This may not always be the case but that confident attitude does go a long way to geting you through the day. Go with confidence, carry a firearm if it makes you feel better, avoid doing stupid things and avoid stupid people and the problems they cause and at the end of the day you'll be fine. The only guarentee we get in life is that none of us are going to walk out of it alive, what counts that we live every minute to it's fullest so you don't spend a lot of time later going "If I had of only ..." Live your life, don't second guess it.
There was never for this long in your life. Just keep swimming, man.
Are you the guy who crossed Niagra Falls on a tight-rope?
You can't go though life being scared to death, brazen it out and you'll do fine.