Maybe you have thought that the God would ask you to do something that you really didn't want to, like go to the deep jungles of Africa to be a missionary, and you don't want to to that. I love writing always have, I had some girls in Jr. High that made fun of me because the teacher gave me a A++ on a paper. To me it was nothing more than letting me know that she really liked what I wrote. Then later in life I shared with some friends what I was writing about and they said that basically no one would be interested because there was already a book on that. That is when I stopped writing for awhile. Then in 2010 when God said to start writing I looked for other means to do what He asked me to do so I didn't have to go through the hurt all over again. Then in the Summer of 2014 it was obvious that He still wanted me to write.
Just like the woman at the well, He gave us what we needed to do what we didn't want to do. He has been faithful to provide the words to write. For the woman at the well she sought relief from having to do the daily fetching of water, yet He gave her Living Water that quenched and sooth her dry and thirsty spirit from all the hurts that she had held in her heart. He will give us the desires of our heart when we delight in Him. The woman so wanted to be healed from the hurt and pain of the rejection from others that whe this Jew was actually talking to her she started realizing that there was something different about Him, something she wanted more of. We may not always know what our hearts desire yet He does. Deep down she wanted to be healed from the hurt and pain and in giving her the Living Water, you can see later that her hurts were washed away by the Living Water.
We don't have to be afraid of what God might ask us to do, because He will always give us what we need in order to do it. So if it is not your hearts desire to go to Africa as a missionary then He won't ask you to go. If you want to be able to minister to those in a rest home then He will open the doors for that. If you want to be healed from the emotional hurts and pain, like the woman at the well, He will do that and more.