"Wherefore the rather, brethren, give diligence to make your calling and election sure: for if you do these things, ye shall never fail: For so an entrance shall be ministered unto you abundantly into the everlasting kingdom of our Lord and Saviour Jesus Christ." (2 Peter 1:10-11) It's all about realizing the presence and therefore the kingdom of God in the here and now. When Jesus says "behold, the kingdom of God is within you." (Luke 17:21), I believe this applies here.
Peter talks about accretion. About the adding on to that which you've received. The Lord made me and then He remade me and now it's up to me to keep coming back for more. To "add to [my] faith" (1:5) Seen this way, it's almost as if the more I press in, the wider the door swings. To where it's not that I'm looking forward to going to Heaven but that I'm enjoying the presence of God as manifest through the fruits of the Spirit.
Restless leg syndrome
"The entrance of Thy words giveth light; it giveth understanding to the simple." (Psalm 119:130)
The mind of Christ is something that we have to build up for ourselves. God will help us but it's us that has to do it. God cannot do it for us. David says "I will cry unto God most high; unto God that performeth all things for me." (Psalm 57:2) There are things that only He can do. Like delivering from spiritual oppression or opening opportunities that all else would deny. But the active participation of us is part of this mix. If we want to get somewhere, unless we move our legs in a bipedal fashion (physically, of course) we won't make it there. And if the Kingdom of God is within us, unless we're actively looking to think along His lines, that atmosphere won't grow in us and as such won't grow out of us, either.
I find that the mind of Christ is something that operates, at times, independent of my body. It's as if, as I keep my mind stayed on Him (it's a lot easier and at once, broader than it sounds), then my body moves around and my attention can be on several things at a time without breaking my stride or focus. The "Kingdom of God", odd as it may sound, is free to expand inside of my heart and mind and as such, the Holy Spirit is allowed to do what He will with those I encounter. I think this is how it was with Jesus. The light in your eyes is the same as His. In fact, it's Him looking through your eyes into others'. Inviting them to come along to what you've found.