It is easy to build up in your imagination the amount of pleasure and happiness you will derive from future events. But by over-anxiously anticipating these future events, you lose your present moments. Frequently those future events turn out disappointing. You had exaggerated their value.
The way to make the most out of your life is to live every second as fully as possible. Regardless of your situation, you have the opportunity to utilize every moment for growth.
To someone who has adopted this attitude, it will not make a great difference how the exact details of life unfold. No matter how things turn out, he still has the opportunity to make it a growthful experience.
(Rabbi Pliskin's Gateway to Happiness, p.152)