You are always HERE. It doesn't matter what you try to do, but nowhere is always where you find yourself. You can plan for the future or think about the pros and cons of the past, but all that led you up to this has made you what you are, every choice you ever made shifted you from one reality to the next, time and time again.
Now it is true that we can influence the present by changing our minds about the past, because our view on life is in constant flux, following the flow of our endless stream of decisions. Making a better life in your future comes from making decisions that redirect you towards the vortex you want to enter. You will find that over the years, certain patterns come back, and they are either things you love or hate. Since you can only decide on both categories at once, start aiming for the positives, and don't sweat the negatives. Give those the least bit of energy required to remove them from your life. You will see they will weaken...