There are things you have to do, things you should do, and things you want to do. For the things you have to do (things required by law, employers, health) you most likely will have to accept the timetables of others. However, for the things you should do or want to do you can set your own schedule and time frame for accomplishing them. That can make you feel less stress, can make you enjoy the processes followed to accomplish these things, and most likely improve your rate of completion.
Each week look at your calendar, schedule, to-do list or whatever method you use to manage your time, and say to yourself, "I can