Good suggestions are given in the link. Following these suggestions one can make his/her life better.

The moral is, if you want to be happy in later years, build a firm foundation right now.

For a stronger building, the base should be strong. To get profits later, we should start investing now and make our base strong.

True. We should not be carried away by complacency. The thinking "Oh, there is a lot of time. I can turn my attention when the time arrives." should be erased from the mind.

We should not forget about past and future for present. Some people say don't think about future, live in present, but in times our future will be our present at that time. So past, present and future all are important for us.

True. All are important. But thinking about future plans is not a bad idea. It is a bad idea if we think about the future while forgetting the present. Anyhow all the three past, present and future should be balanced.

Tue. We should not forget our present for future plans, and should not spoil our present due to mistakes done in past. We should take corrective steps to redress the mistakes done in past and make future plans, so that we will never repeat those mistakes done in past. So balancing past, present and future makes our life simple and better.

Well said. It is our life. We should direct all our efforts to make it blissful and happy life.

1. Take care of your health.
2. Reading good books.
3. Take care of your relationship.
4. Meditation which gives good health and mental strength.
5. Leave out your bad habits. 

Well. The combination of all the above is the crux of a happy life.