Sometimes if the goal is set too big, it will bring an invisible pressure if it can't be achieved in a short time. You can break down big goals into small goals and then achieve them one by one, so the pressure will be much less.
Second, replace stress with exercise.
You can increase your self-confidence through running, swimming and other fitness exercises, and people who like sports can also decompose stress well.
Third, watch more funny videos.
Funny videos can relieve stress very well. After all, smiling can relieve nervous tension.