Om Swami
Why should I stay truthful even while doing so much for my family and others?
Never leave the path of truth
Someone blind in attachment sees no one else, yet no one goes with him after death or shares the fruits of his deeds. So never leave the path of truth while you do for others.
Therefore one should never leave the path of truth. This is the core. Do for everyone, as much as you can for family, society and the world, but do it with truthfulness.