When you are approaching a reward, such as the achievement of a goal, your body releases dopamine. Once you set a goal, plan out small, concrete steps you can take. Each time you achieve a part of your goal by taking a step, your brain may reward you with dopamine. For example, say your goal is you want to learn how to paint. You could set small goals like get supplies, set up a workstation, and practice painting 30 minutes every day. Sunlight likely plays a role in how many dopamine receptors are available to "catch" the dopamine. In other words, while it doesn't increase dopamine per se, it increases the amount your system is making use of, offering similar benefits. Spending as little as 5 to 10 minutes in the sun can help. Try taking a walk at your lunch break to get a little sunshine in. True meditation relaxes you completely, to the point that you have less of a desire to act. In turn, your body may release dopamine in response, as a way of encouraging action. Try practicing meditation 2-3 times a day.  Even simple meditation like deep breathing can increase your dopamine levels. For deep breathing, try focusing on just your breathing. Breathe in to the count of 4, and then hold for 4 counts. Breathe out to the count 4. Repeat this action, focusing solely on your breathing. You can try a meditation app such as Insight Timer, Calm, or Headspace. You can follow either a guided or non-guided meditation. Gratitude is linked to the release of dopamine in your brain. The more thankful you are, the more likely your brain is to release dopamine. Just being thankful for a good meal or something a friend just did and expressing it is a way to release dopamine. You can also try keeping a gratitude journal, where you write down 5 things you're thankful for each day.

TL;DR in Chinese:
设定目标，并在实现它们后奖励自己。 多晒太阳，提高多巴胺敏感性。 想要大脑分泌多巴胺时，可以试着冥想 学会感恩和感激。