Selfishness kills everything!
It's a murderer of love, joy, peace... We have a very selfish nature that always fails to lead us to true satisfaction.
Selfish ambition is listed in the Bible as a work of the flesh, which is contrary to what God wants to produce in our lives (Galations 5:17-23). God's trying to produce love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control. I yearn for these "fruits of the Spirit" but fail to focus on God and then convince myself that I can find love, joy, peace... elsewhere, it's just the easier thing to do.
I have relied on myself and took care of myself for the first 19 years of my life, I'm a creature of habit. It's a real challenge to accept the fact that God will always take care of my needs and that He wants me to rely on Him. I pray that I learn to habitually trust and rely on God. Breaking old habits and forming new ones is a very difficult thing. Nobody wants to change. But the truth is that God wants us to first seek His kingdom and everything else will fall into place (Matt 6:33). It's not; first seek your selfish ambitions.
So let's make it a habit to run to God and seek and accept truth. The truth is God loves us and wants our devotion. We must die to ourself, and we only can do it by relying on the Holy Spirit! Holy Spirit help us. Jesus is our example.