When we care for others our own strength to live increases. When we help people expand their state of life, our lives also expand. Actions to benefit others are not separate from actions to benefit oneself. Our lives and the lives of others are ultimately inseparable.
It is important to take a long-range view. No great achievement is accomplished overnight or without difficulty. Should benefit be obtained easily without making any efforts in Buddhist practice, we’d probably just as easily abandon our faith and end up miserable as a consequence. Because it isn’t easy to get into a highly ranked school, students study with all their might, gaining an abundance of knowledge and ability. Faith follows basically the same formula: Practice is essential to attaining Buddhahood.