The training of the mind is an art. If this can be considered art, one's life is art.
Through training there is knowledge. You can produce compassion, love, forgiveness. you can change yourself.
All human beings have an innate desire to overcome suffering, to find happiness. Training the mind to think differently, through meditation, is one important way to avoid suffering and be happy.
Happiness can be achieved through training the mind.
One has to try to develop one's inner feelings, which can be done simply by training one's mind. This is a priceless human asset and one you don't have to pay income tax on!
Developing inner values is much like physical exercise. The more we train our abilities, the stronger they become. The difference is that, unlike the body, when it comes to training the mind, there is no limit to how far we can go.