Stress can lead to all sorts of unpleasant things like gray hair and sleepless nights, so it is in your best interest to avoid it as much as possible. Too many freelancers worry about minute problems that crop up and the unavoidable negative aspects of working for themselves.
Take a look at th examples of "small stuff" below and learn how to relax and carry on.
Not getting a contract with the client you want can always be a disappointment, but it shouldn't turn into worry that it was all your fault and there is something wrong with you. It is important to realize that some clients just will not mesh with your way of doing business or prefer a different style of work. This is completely alright and you must learn to accept this. Being turned down or not contacted does not mean you are bad. Freelance workers should always put their best foot forward, but then put the next one forward to walk away if things don't pan out.
While freelancers should strive to separate their personal and professional time, sometimes it just doesn't work out perfectly. Either something happens to slow down a job or you underestimated the time it would take and overtime is necessary. Do not become stressed about occasionally working more hours than you plan to. As long as it only happens infrequently, you are still budgeting your time wisely.
In the freelance community and when working with clients, it would be great if everyone was always supportive and kind. However, your freelance career will b peppered with people who have very negative attitudes and seemed to enjoy being difficult. If this happens, it is of the utmost importance that you let it slide and do not engage with these people. The best thing you can do is take a deep breath and move on to the next post or project.