'Bitterness of My Soul' in the Bible

Therefore I will not hold my mouth; I will speak in the trouble of my spirit; I will complain in the bitterness of my soul.

My soul is weary of my life; I will leave my complaint on my self; I will speak in the bitterness of my soul.

What shall I say? He has spoken to me, and He Himself has acted; I shall go softly all my years in the bitterness of my soul.