"Trust in the Lord with all thine heart; and lean not unto thine own understanding. In all thy ways acknowledge Him, and He shall direct thy paths."
If you think about it, trust is all about leaning, but usually it is all about leaning on someone other than ourselves. We need to lean on the Lord, but how do we do this?
In all our ways, we need to acknowledge or know who God is, because that knowledge of him will lead us to see that He is trustworthy.
When we question a moral choice, we need to think about the attribute of holiness that is God, and knowing that attribute, we need to ask ourselves whether what we desire is something that God would want us to lean on him for. Or would He want nothing to do with it? With moral decisions, we need to remember the omnipresence and omniscience of God. He is always with you no matter where you are or what you are doing. He knows everything including your thoughts.
When we are anxious or fearful about something in life, we need to remind ourselves that God is first of all sovereign (in control of everything). He is omniscient (all knowing). He is omnipotent (all powerful). He is omnipresent (He is everywhere at the same time) This knowledge of God should help us to trust Him and not lean on our own understanding.
The knowledge of His love and mercy should assure us that He loves those who are unsaved and desires all to come to Him. This knowledge should help us to lean on Him when we are concerned about family who may not know the Lord.
The attributes of God are so many, and as the Word of God says, His ways are past our figuring them out (Romans 11:33). They are beyond us, but He lets us know Him through His Word and through the Spirit revealing the meaning of The Word, and that knowledge of Him needs to come into play with our every decision. As we acknowledge Him, He promises to straighten our path or make it right. We have no reason for worry or concern. We need to only lean on Him - acknowledging Him - knowing who He is.