There’s life in your words; that’s one of the reasons why we should speak good things with our mouths. We should manifest good things in our lives, as we are somehow responsible for how our lives turn out, whether good or bad.
Sticking closely to God and His words, pursuing His dreams for our lives, and seeing how God works out our dreams for us, working out our lives for the better. Like you said, God is always faithful, and we should learn to play our role, staying committed to God no matter the challenges we face in life. God knows better, and God’s best is what is good for us.
It's important to speak good words with our mouth because there is life in it as you have also mentioned. We are responsible for how we turn out. It's our choice...our decisions.
We need to stick closely to God because with God, we can understand the importance of words and how to pursue our dreams.