Psalm 37 NKJV
Verse 4

"Delight yourself also in the LORD, and He shall give you the desires of your heart."

Delight: to be soft or pliable, to luxuriate
Desires: requests or petitions
Heart: figuratively; feelings, will or even intellect; the center of anything

To be soft makes me think of becoming vulnerable. Whenever we let someone know that we love them we become vulnerable to be hurt by them. God is the safest one to have a relationship with. We might think that God will ask us to do something that we don't want to do or are afraid to do. We just have to trust Him.

Being pliable can be like clay in the potter’s hand being molded into a vessel with a special purpose.
Then there's luxuriate, snuggle into a furry blanket, soak in a tub of scented bubbles, settle back in that leather recliner.

So could delighting YOURSELF in the LORD mean to be so in love with Him that we know we can be completely open without ever being hurt, so pliable that we trust Him to mold us into whatever He wants us to be and then just relax and enjoy the special intimate love He has for us.

Once we can come to the realization that God is love and His love for us is perfect, unconditional and eternal, we can have no greater delight than to spend time with Him. I remember a time when Papa and I had not seen each other for several months and I went to meet him at the airport. When I spotted him in the crowd coming toward me, I thought my heart would burst with love for him. I couldn't take my eyes off of him. I want to have that kind of anticipation for our LORD when I go to spend time with Him.

Bible reading is reading love letters from the One who loves us most. Prayer time is like talking on the phone for hours and never running out of things to share. Our relationship with God can be as comfortable as just being together, resting in His presence, being still and knowing Him. 
When we have this love for Him (which is simply a reflection of the love He has for us) He gives us the desires of our hearts. Our heart is the center of our being. What do we really want deep down inside? Do we want material things? Do we want comfort? Do we want security? At my age and stage of life I have finally figured out my priorities. He has already given me so many of my desires. Peace, love, security and Joy. By placing myself completely in His hands, I have all I want and need. The only thing that I desire is to know Him more. He is my heart's desire.