So if I could govern my thoughts to think not of the sad, dark or anything that is not happy, despite of the unwelcoming situations, would I remain unaffected and stay happy? I guess it does help to some extent.
A good friend once told me this. When one is put into a really bad situation, instead of panic, the best thing one should be thinking is, what could be the worst situation that you that you could face and then face it boldly. Things are not really as bad as you think. For example, you couldn’t complete the report to be submitted by next week. Instead of worrying, face the situation wisely. Speak to the boss/ lecturer. Well, probably, the worst scenario is to face the music from the boss/ lecturer. Get fired? Probably, not so. Sometimes, we complicate things with our thoughts. Situations could be very simple.
That is, think of what is the worst scenario you could face! When you are come to terms with it, the less affected you would be.