"All negativity is caused by an accumulation of psychological time and denial of the present. Unease, anxiety, tension, stress, worry - all forms of fear - are caused by too much future and not enough presence. Guilt, regret, resentment, grievances, sadness, bitterness and all forms of non-forgiveness are caused by too much past and not enough presence."
Live for today, the present, here and now... that's all you have. You will enjoy a more peaceful existence if you don't project to the future or dwell in the past. You cannot change anything that has already happened, so you are just causing yourself distress by living there. Take a visit to your past and clear out all the cobwebs, and relieve yourself of all negative energy. Then move forward. As for your future, you have no way of knowing what that will bring and it's too stressful an existence to attempt to control it. Control is an illusion.
"Today is a new day. It is a day you have never seen before and a day you will never see again. Stop telling yourself the 'same crap, different day' lie! How many days has that lie stolen from you? Seize the wonder and uniqueness of today! Recognize that throughout this beautiful day, you have an incredible amount of opportunities to move in the direction you want to go." Dr. Steve Maraboli
If we are being realistic, we have to recognize that today, this moment, right now is all we have. It's all the heartache or joy that it is. You can't extend it, once it passes, it's over. Everything up until this moment has passed, and everything beyond this moment is yet to come. This is it! Fill your boots, enjoy your time, fill it up, use it up, it will never come again.
Live your life. Take chances, be crazy, don't wait, because right now is the oldest you've ever been and the youngest you'll ever be again.