Low levels of Serotonin, many doctors have found that patients with low levels of Serotonin suffered from depression. Serotonin can affect moods, which can lead to disorders.
1 and 2 I believe, picking 3 and 4 is a no no
Answer:
When setting a goal you need to specify not only what you will do but also where and when you will do it. ... The brain recognises the situation as an opportunity to advance the goal. When the situation is detected, action is initiated automatically. If-Then plans are a good way of making new habits stick.
