The energy of love, as the mother nature of energy, is neither created nor detroyed, so make sure you direct it to the meant recepients. Or else, eternally it shall live inside you, either you're with them or not..
The essence of being human is that one does not seek perfection that one is prepared in the end to be defeated and broken up by life, which is the inevitable price of fastening one's love upon other human individuals.
The greatest gift a parent can give a child is unconditional love. As a child wanders and strays, finding his bearings, he needs a sense of absolute love from a parent. There's nothing wrong with tough love, as long as the love is unconditional.