What are some good jobs/careers for some things like security?

Im looking to get out of the Automotive field, im a young 21 year old automotive technician and the industry is getting worse, im making less and less money and i used to love cars and now im beginning to hate them because of all the BS in this trade. I would like to make good money and good benefits. Im not a greedy person i just need enough to live off of and eventually have a family and take care of them. I was looking into security because i am a martial artist and a member of the NRA so im always ready if a situation goes bad.