Plenty of people want to be in shape and look good. But, diets are also very easy to fail. Sometimes, people get too ambitious and eager in the beginning, and eventually give up in disappointment or burnout. Other times, some actually reach their diet goals but quickly revert back to their old ways. However, a successful diet requires a long-term lifestyle change, which has many implications both socially and financially. While making social changes (i.e. who you spend time with) might be difficult, here are 3 financial investments that you actually should incur in order to make the lifestyle shift and start living more healthily for the long run. Sign Up for a Gym, Commit to Going 3-4 Days a Week If you are serious about getting in shape, you absolutely must make a commitment to exercise 3-4 times a week. To that end, you should plan to invest ......