The year is 2042. You look back 20 years and wish you'd have done things differently. But it's too late now, too late to change those things, too late to start anymore. If only you'd have a second chance.
The year is 2022. By miracle you have travelled back in time 20 years. You know where you want to be 20 years from now. You know what needs to change to get there. It is not too late to start now. You still have plenty of time. You have the power to change the future today!
Sorry, I forgot to tell you this was a one way trip. You need to return back the ordinary way, all the 20 years. Don't worry, it'll be all worth it.
Future past is written today. The only time to change it is now. There are no second chances in real life. Make sure you get the first one right! The future is still all open for tou to make it what you will.