Avoid self-pity and renounce regret. Feeling sorry for yourself is a waste of precious time and energy. And regretting the mistakes of yesterday won't help you build a better tomorrow. "YOU CAN'T WIN THEM ALL; DON'T WASTE TIME REGRETTING THE ONES YOU LOSE."
In the writings of Paul to the Philippians, he says. Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before. I press toward the mark for the prize of the high calling of God in Christ Jesus.
If you are caught up in intense feelings of anger or regret, you know all too well the destructive power of these emotions. How can you rid yourself of these feelings.
First, you must prayerfully ask God to free you from these feelings. Then, you must learn to catch yourself whenever thoughts of bitterness, and regrets begin to attack you. 2 Corinthians 10:5 reads; Casting down imaginations (arguments), and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ; vs.6 And having in a readiness to (punish) revenge all disobedience, when your obedience is fulfilled.
I like what Charles Swindoll said; "Get rid of the poison of built-up anger and the acid of long-term resentment." Let me ask you a question? Are you ready to make peace with your past? Christ Jesus stands ready to help you forget the past. Because you are human, you may be slow to forget yesterday's disappointments. But, if you sincerely focus your hopes and energies on the future, then you must find ways to accept the past, no matter how difficult it may be to do.
In closing remember this. There is no road back to yesterday, so it is better to forgive and forget than to resent and remember.
May God Blessing Overtake You!