Peace for a Doer

Peace...
What does that mean Lord?
Rest...
What does that look like and how do I do that?
These are a few questions I've had this week in a struggle with God.
You see, in my mind, the gift doesn't make sense. It's too much. How is it that He created us, Loves us unconditionally, died for us, took our sin upon Him, He gave us the Holy Spirit to lead us and guide us, He gives us what we need for each day, He is preparing the most unimaginable gift and home for us to enjoy for eternity. And all I have to do is believe? That's crazy...its TOO much. The gift is Too much.
Don't I have to earn it or at least try? I get so caught up in "Should" and its turned to Legalism. There is nothing I can do or not do that will change His love for me or change what He has given me. So on top of all of this He gives me Peace, one that surpasses all understanding and I am to rest in it? How does He do it all and what is my part?
For a "Doer" like me, its hard to understand that He does it ALL and I am to rest in Him and enjoy His peace that is a gift...a true gift from Him.
But, what do I "DO" then Lord...how do I make a difference for you...how do I make things happen? I don't...He does.
I Love. By showing Love to others I am showing Him love.
I trust. By trusting Him I am receiving and enjoying His peace and rest that He so generously gave me.
I Seek Him. Knowing that I need a daily dose of His Truth in a world that promotes the facade.
This is by no means anything I've even come close to understanding fully or even have begun to live but He has just revealed it to me and after a serious struggle this past few weeks of wondering what I need to "do". It is refreshing and I am grateful...very grateful that He does it all. :)
Psalm 119:161b & 162
But my heart stands in awe of Your word.
I rejoice at Your word
As one who finds great treasure

Colossians 3:12-17
v.14...But above all these things put on love, which is the bond of perfection.15 And let the peace of God rule in your hearts, to which also you were called in one body; and be thankful.16 Let the word of Christ dwell in you richly in all wisdom, teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.17 And whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks to God the Father through Him.