Maslow Ladder

Physiological Needs – Food, water, sleep, air
Safety Needs – A home, family, physical security
Love Needs – Belonging to a group, being accepted by others
Esteem Needs – Feeling good about a level of competence, recognition for excellence
Self Actualization – Becoming all that one is capable of becoming, maximizing potential

Maslow says happiness is generally acquired by satisfying the above needs in the top-down order.

- Abraham Maslow