Here is a post from JGIG which looks at "Abiding in Christ"....
We abide in Christ the moment we are born into the family of God through Christ.
After you were born, and I'm assuming you weren't abandoned or orphaned as a child, what effort did you exert to remain a member of your family?
So it is when we abide in Christ. If you are in Christ, you are abiding in Christ.
REST. Now, rest, REST is a different matter. Hebrews tells us to strive to enter into His REST. A paradox, to be sure, but goes to show us that it's something that we have to purpose to do - to choose to rest in the Work of Christ and not strive in our own works - and out of that comes Fruit.
Stressed plants don't tend to bear great fruit. They may squeeze out a good piece here or there, but there is no consistency or harvests.
In Christ, we're promised life, and life in abundance. I don't believe that necessarily means health and wealth (though those are not bad things), but it does mean that there will be Fruit in our lives - love, joy, peace, patience, self-control, etc., and those things in the midst of our circumstances because in every one of life's circumstances, Christ promises to never leave or forsake us.
We can be born-again and abiding in Christ, yet not resting in the Truth of who we are in Him based on Who He is and what He's done - AND that He walks with us ALWAYS.
So abide AND rest . . . that's where Fruit happens!
-JGIG