L foom agra, sachra says the Talmud. According to the effort is the reward. We would usually read this to mean that we gain more when we put forth greater effort. Yet, the ancient ones meant that our effort is our reward. In other words, we gain a sense of pride and joy when we place real energies into work.
Relationships here are key.
No easy feat to raise children. Commitment, in a word. The essence of marriage is not an everyday romance but the willingness to forgive. Just think how long a relationship would last if a partner would not forgive the foul mood and bad-temper days. Successful parenting is no different.