The cumulative affects that you feel from a daily meditation practice is greater than that which you feel from a periodic practice. Even a daily meditation practice of only 5 minutes is a good start. Think consistency over longevity.
A daily meditation practice trains your mind and body in many aspects. It trains your mind and body to relax, to focus, to let go, to be present, to ground, etc. These are just some of the benefits of meditation. It also helps you to reprogram your subconscious mind