Heart is king, as a minister. If you are tired, you won't be tired. If you are tired, you will be tired, even happy.
Simple and effective method:
"Keep your mind off trouble": watch your mobile phone less, and control it within four hours every day on average. The time saved is reading, thinking, drinking, chatting and staring blankly.
"Walk frequently and let your muscles move": Concentrate on exercising at least twice a week for one hour each time, which is within three kilometers. Go to the restaurant before meals and go back to your residence after meals.