Being sure that you are where you should be is vitally important. When we talk about important decisions in life, if you are not sure that you are marrying the right person, that you are studying the right thing, that you are accepting the right job, that you are moving to the right place, etc., sooner or later that insecurity will bring you problems.

That insecurity will be transformed into indecisions, worries, stress, problems with people close to you, one bad decision after another; at best y...