Consistency Gets RESULTS
For anyone looking to make significant improvements in their health and fitness, they need to improve on what they are already doing. I tell my clients that the minimum they need to do to see progress, at least at first, is to work out 3 times per week, 45-60 minutes each time. This is a very small time commitment. In that time frame, they can get in 3 cardiovascular workouts of 30-45 minutes. The rest of the time they are doing efficient strength training and core exercises. If somebody is already doing that or more, they need to improve on their nutrition, lifestyle (sleep, stress reduction), and most likely change up their workouts to make them more effective.
The best tip I've learned along the way for losing body fat and keeping it off would have to be not to keep unhealthy foods around me. I know myself and if I have junk food in my car, apartment, office, locker, etc I will end up eating it. The key is to avoid purchasing any questionable food at the grocery store and only stock up on healthy foods. Some people have a stronger willpower than me but I would still recommend most people use this same tactic.