The universe will expand,then it well collapse back on itself,and then it well expand again.It will repeat this process forever.What you don't know is that when the universe expands again,everything will be as it is now.What ever mistakes you make this time around,you will live through on your next pass.Every mistake you make...you will live through...again and again,forever.So my advice to you is to get it right this time around,because this time...is all you have.