Trust in YHWH with all your heart, and do not lean on your own understanding. In all your ways acknowledge him, and he will make straight your paths.
Proverbs 3:5-6

What does it mean to trust in YHWH with all your heart? It means to "acknowledge him in all your ways". In other words, to keep his law, to love what he loves and to hate what he hates. If you keep his commandments, your life will be "straight", much less complicated.