Bring each of your children a little surprise that will please them (A different surprise depending on each of each child’s particular tastes).
When you know that someone likes something, if you love that person you want to do what they like.
It’s a bit the same with God, when you know what he likes (or dislikes), out of love for him, you make decisions accordingly.
Eli did not know how to do what pleases God. He knew that God did not agree with the behavior of his sons, but he did nothing to change that. He was too tolerant of his sons.
Like David, we can pray: God, I want to please you with all my heart, do not allow me to deviate from your commandments!
Give me the courage to take the right action when I know that a situation is not in line with what you want.