All we have now is present, so one must live in the present and make it indeed valuable.
However, instead of being satisfied with what we have, a person is always looking for something better. He holds the opinion that he should focus on something which can give them more monetary benefit, more fame or maybe which is more satisfactory than the present situation. With an expectation to achieve something bigger than the present one often makes a person undervalue what he has now. However, disappointment occurs when they fail to progress on the next which they were desperate of.
Thus, one should never forget; everything happens with time. Just concentrate on making your current situation the best.
All that you can do is prepare yourself by learning and experiencing, which can only be possible by doing your best today, so that you can become capable of delivering your best tomorrow.