The end of a marriage is automatically a stressful time, but you don't have to add more stress to it. You can have a divorce with minimal stress, but it will take a bit of work. One of the most important things that you can do is to set clear boundaries for the situation. You don't have to deal with a bunch of harassment from your ex, but you should agree to treat each other with mutual respect.
While it is important to protect your interests during the divorce, you might find that things are less stressful if you don't try to pit yourself against your ex during the entire process. Instead, you can try to work through a collaborative process to help you come up with the terms of the divorce. Just remember that if you are going to do this, you have to be willing to negotiate.
You need to set specific goals for yourself during the divorce. It is easy to lose yourself in such a major life upheaval. Instead of trying to spend all your time trying to think about the end of the marriage, set some plans for what you can do to enjoy your life now. You don't have anyone else who has a say in what you do now, so take advantage of the new freedom.
Another tip as you are making decisions about your divorce is to focus on the long-term effects of those. Some options might seem appealing now but they become more problematic as time progresses. To avoid this, try to think about what each one will mean for your life in a decade from now and this may help you to avoid stressful complications in the future.