By focusing on your present, you can change your past and your future.
It’s true that past is a done deal. How the events unravelled back then cannot be changed. But what you can change about it is perspective. Instead of viewing the past as the time lost, see it as a time well spent. The rise and the fall constructed your present and will also construct your future.
The future changing argument is plausible right? By controlling your present you can gain some control of the future. But it is also true that the future will not be laid out exactly as you planned now. Some past deeds that cannot be undone will affect it and some uncertain future factors will also affect the future in some way.
Planning and controlling your present is not a fool-proof way to achievement. But it does serve its purpose no matter how big or small. When someone is stuck in the darkness they will always be drawn towards light, no matter how faint.
That’s why no matter how significant or insignificant your present seems to you now, at this very moment it is your only light. Cherish it. Don’t let it fade.