You need to accomplish things that you had imagined in your mind. The memory is a place that you’ll never conquer, so don’t bother being depressed and ruminating about the past or even the present; you’ll just get even more depressed. A useful tool to have is a notebook, a journal, an agenda, etc., anything that lets you right down a task and that you have with you at all times. Having this one habit (or trick) will enable you to make fast progress,
This is why you need to write down your goals. And here is how you should do it.