You can do nothing about the past whether good or bad. It is time to move forward and release all that is behind you. There is nothing you can do to change what was. Some of your decisions resulted in seeds sown that produced regret. But, you can make better choices now that will reap a healthier and more robust harvest. Choose wisely, for you stand on the threshold of a new beginning and new opportunities.
There are certain requirements that must be met at this time before you can be free to do the next thing. Establish yourself in a place of willingness to do all that's needed for you to do. Be strong, stay focused and do the work.