I find it more realistic, and less burdensome, to look for specific ways to place confidence, much of which is outside of oneself. Be confident in love. Be confident in good character such as being trustworthy, respectful, responsible, and serving. Be confident in talent and interest combined with skill and hard work.
God indeed is my savior; I am confident and unafraid. My strength and my courage is the LORD, and he has been my savior. Isaiah 12:2Ultimately, be confident in God.
And know that I have great confidence in you.