"As Single Dads, the most important relationship you will ever have is with your children" Mike Yehl
Always make time to reach out to your children consistently...even if they don't answer or respond..just do it.
Call your kids regularly. Even if they don't call you back or have nothing to say.
Don't buy their love or silence. They will love you unconditionally, so should you.
Parenting is not an option. Dad first, their friend second. Buying them "stuff" does not fix the problem or gain their respect.