Stress in life is unavoidable (despite how much you are trying to avoid it). The question is: what is the best way of dealing with it when it occurs? If you do not have any strategies to deal with it (other than run away), then read this: How to Turn Off Harmful Stress Like a Switch.
Sometimes just knowing you have one or more tools available to you can automatically reduce your stress. Read that and load up your stress toolbox.
P.S. If you need more tools, see this piece in the New York Times.
If you suffer from the Sunday blues, whereby you spend Sunday evening dreading the upcoming week, I recommend you read this: Skip Monday Blues with Sort-Your-Life-Out Sundays – 99U. It is one way to hack your time and enjoy it more.
Another good hack is the making Thursday night the start of the weekend. Consider some of the things you enjoy doing on the weekend and schedule them for Thursday evening. Even people with jam packed weeks can do this occasionally. You still have to go in to work on Friday, but you feel you already have gotten a start on the weekend. It makes the weekend seem less stressed, at least for me.
Finally, if you feel every week is one busy day after another, try making Wednesday a night of putting everything down and just relaxing. Either pare back the things you’d normally do on Wednesday, or shift some of it to another day.
Ultimately you want to figure out how to do less throughout the week in order to enjoy each of the days in themselves, be they busy or slow. If you do that, the days you have to do things will help you enjoy the days you do not.
Pace yourself and enjoy yourself.