Your 30s can be one of your best decades ever for building wealth. You may finally have a job that you want to base your career around and you may have started to build some wealth. But your 30s can also be very difficult financially, as you may be starting a family, preparing for your kids to go to college, thinking about saving for retirement, and even trying to keep up with the Joneses. Fortunately, there are some great moves that you can make with money in your 30s to put you on the right path financially. Here are 30 things that you can do to build wealth in your…