"For You will not abandon my soul to Sheol (the grave); Nor will You allow Your Holy One to undergo decay. You will make known to me the path of life; In Your presence is fullness of joy; In Your right hand there are pleasures forever." Psalm 16:10-11
This was written by King David, the unexpected candidate that God handpicked through His prophet Samuel to be king over Israel. He made a couple of enemies, and when he wrote this, he was running and hiding from some of them to save his life.
There are times in life where we are in a bad situation. For one reason or another, things aren't going well and we are usually filled with unrest and insecurity, confused about what is going on and wondering what it will cost us. At those times, we turn to a couple of the usual suspects - fear, anxiety, worry, stress... the list goes on. God called David "a man after his own heart" and this probably had something to do with why. When David's life was in danger, He turned to God to help him, but even in his anguish, he still remembered that God was not some far away Higher Being who looked down at his life to examine it every now and again, who he was held accountable to at the end of his life - no, he realized that God cared. God was interested in everything that went on with him and was with him even while he was suffering. He says that although these people are trying to kill him, and he is running away, he knows that God will not ABANDON him, will not allow his enemies to get the best of him. Where most would have accused God of leaving them alone, he believes that God will show him the way to safety, and looks forward to the joy that he experiences when he is safely in God's presence.
When we follow the rest of the Bible stories about David we see that God did save him from this (and many other) trial(s), and David spent many years writing more Psalms talking about the goodness of God.
We don't have to worry about our lives and what will become of us, if we are God's, then He cares for us as His children. Whatever we go through in life, it's a blessing to remember that God is faithful to all who turn to Him, and whether it feels like it or not, He is concerned for our well-being even more than we are, and He protects His own!