In the final analysis, we are tired because we want too much and can do too little. In fact, if you calm down, don't worry so much, just do everything in front of you, and life will be much simpler and happier.
If you are tired, just give your heart a holiday. Don't think about things you can't get over, and don't cling to things you can't get. Many times, we are very hard on ourselves and refuse to let ourselves catch a breath, which is why we are so hard.
A person's life is only a few decades, so learn to live happily every day. Take a lot of things lightly and think from another angle, and everything will suddenly become clear.