You must rededicate yourself and your family to the glory of God. Another thing a father can do is cherish his wife. Dads, all the love in your household flows through your love for the woman you married. More than anything else, what gives your children confidence to face the world is the absolute certainty that you will always care for their mother. I would almost say that your love for her is more important to your children than your love for them.
Children learn what love is from their father's heart.
He needs to provide for his family, of course. However, even a hard-working dad needs to spend time with his kids. Lots of time. Sadly, the average American dad spends only fourteen minutes a day with his children. I can't prove it, exactly, but my conviction is that one of the ways children take on the image of their fathers is by gazing into their eyes.