Life repeats itself mindlessly - unless you become mindful, it will go on repeating like a wheel. That's why Buddhists call it the wheel of life and death, the wheel of time. It moves like a wheel: birth is followed by death, death is followed by birth; love is followed by hate, hate is followed by love; success is followed by failure, failure is followed by success.
Just see! If you can watch just for a few days, you will see a pattern emerging, a wheel pattern. One day, a fine morning, you are feeling so good and so happy, and another day you are so dull, so dead that you start thinking of committing suicide. And just the other day you were so full of life, so blissful that you were feeling thankful to God, that you were in a mood of deep gratefulness, and today there is great complaint and you don't see the point why one should go on living.... And it goes on and on, but you don't see the pattern. Once you see the pattern, you can get out of it.