What makes us more easily become depressed?

Some of us are very emotionally strung. We at times get so tensed up due to vaious stress we feel. When you get stressed up and do not have any regular sleep you tend to get derpressed. That is your brain is not getting enough rest. One has to rest the thinking ability. You have to meditate or take deep breaths and try to come out of that mental lethargy. Even people who are bold and dynamic as you say get into this rut. If you can find that out in the early stages you can come out easily. You have to take steps yourself. All the best