Don't wait until another time in your life to start your relationships with your kids. Start immediately. Your children will grow too quickly to wait for you to fit them in when time and life allow. You must set family as your main priority over work and sport and friends. If you don't start now, they may not be so responsive one day when it suits you.
Always accept full responsibility for your child's growth and development. Don't leave it purely to others (teachers, nannies, etc.). You and Mom have ultimate responsibility and accountability. Treat your role with respect.