That statement means to not live according to your own whims and feelings, but to obey God's word even when it isn't what you want or seems counter intuitive. It doesn't mean to not use your brain or not think. It's forsaking your sinful desires to do what is right according to God's word. Low time preference living is a part of that.
Discussion
Read what I wrote again & then read what you just said.
It sounds like you identify with your high time preference thoughts & attribute low time preference desires to God.
Yes. My sinful nature wants to live high time preference. But i don't lean on my understanding (my natural inclination to do the high time preference thing and all the excuses i come up in my mind about why its not so bad), I acknowledge the Lord and seek to do the low time preference thing.
I think that sounds like a recipe for extremely low self esteem, among all sorts of other problems. The ideas that you have are all part of you. To attribute only bad ideas to yourself & good ideas to God is really self destructive IMO.
You may think so but I do and I have joy and peace and high self worth.
Trust in the LORD with all your heart and lean not on your own understanding; 6 in all your ways acknowledge him, and he will make your paths straight.
That's the full verse. It's basically saying to not trust yourself, but to trust God and obey His law. Our hearts are deceitful, we cannot trust our own intuitions to lead us. If you think you can, go ahead and do it, but I don't. I choose to lean on God's word. My mind is submitted to the word of God.