Excellent post, you are absolutely right, the things that happen to us many times tend to make us bitter, the support in our creator is the easiest way to avoid these roots of bitterness as you rightly say. God's sacred word instructs us how to be better every day, we are imperfect and sinful to death but we can try to be better by following the advice and guidelines written in his word.
Let us do the opposite of bitterness of heart, let us be filled with love and understanding of our neighbor.
Thank you for this beautiful post Bro.
I am very pleased that there are so many people of faith who trust and rely on God and strive to become better with His help and support. All God's blessings to you, brother)