It is only by practicing through a continual succession of agreeable and disagreeable situations that we acquire true strengths. To accept that pain is inherent and to live our lives from this understanding is to create the causes and conditions for happiness.
Shunryu SuzukiHappiness is sorrow; sorrow is happiness. There is happiness in difficulty; difficulty in happiness. Even though the ways we feel are different, they are not really different, in essence they are the same. This is the true understanding transmitted from Buddha to us.
Shunryu Suzuki