I'd rob many banks, then use that money to begin funding research on cloning a body without a brain and funding brain transplant technology. Then I would freeze time, but I would freeze myself so I wouldn't age, but let everyone else keep on living. I stop my own time in a very specific area, so that people can touch me, but nothing can hurt me, except for a very thin line so they can get my brain out. Then use my powers and my very well-funded research laboratory to live forever until I find a way to stop the aging process altogether, in which case I freeze time anytime I want and no longer need clones to live on.
Also, I use my power to cause massive chaos to those I dislike but also save people's lives (people I don't hate that is).