Why would you want to stress over more things that usual? Don’t make set grand goals. If your wish is to get fit, then just start with walking more or riding a bike to work, if possible. This habit will eventually translate to going to the gym a couple of days a week before you find yourself there almost every day. Do the same with your eating habits. Don’t go “cold turkey” on the desserts. Replace them with a smoothie perhaps. Go one day at a time.