It's a long slow process.
But keep working on it. It does get a bit easier over time , to forgive yourself

Language is so important and when we tell ourselves negative things about ourselves over a long period of time the thoughts and words that we use can become automatic so it takes some work to break the cycle
Cognitive type therapy can help a lot with this

Automatic thoughts

http://www.resilient-mindset.com/2012/10/22/negative-automatic-thought/

I agree with dancing. It is a slow process but it pays off. This is an area that I'd use grieving techniques to focus on the problem.
There are lots of things we can grieve for, and self-forgiveness is certainly one of them.

I think the bipolar causes that and it's a tough road to go down. I asked my husband why he loved me and not someone normal and he said I had a great personality and people can be flaky, mean, immoral, and down right hard to live with and be perfectly "fine" and "normal" -- but I'm a really nice person who just happens to be sick. He didn't really say it quite that way - it was 5:30 am and I was having a panic attack, lol, but maybe if you just think of the bad feelings as the bipolar and know you're a great person maybe it will be easier. Sorry if this makes no sense. Cheers ((hugs))

Thanks everyone for the good advice

Baby steps and challenging thoughts that Always fuck us up! I have been doing this for 20 years, and I am a lot better person, and a lot less regret....

To me, depression is always attacking me - current horrible self-talk is "you are loser..." then ever mistake I've made pops up to prove it to myself, ugh..... the last few months, when "loser" pops up in my head, whether in a good place, bad place or out of the blue - I say to myself "NO, you make mistakes, NO, you are silly - not stupid." I also replace bad thoughts, with GOOD ones Ready!

You can't tell bad thougths to go away, thinking your mind will be blank - you have to Replace the thought - so I have them ready...

No, you make mistakes
The Serentity Prayer (helps me a lot when overwhelmed)
"I try to make new mistakes - growing pains.
The past made me the strong, kind woman I am - it is not my future.... etc, etc,

Any slogan, quip, prayer, quote - have a list of tools ready, when the onslaught starts, fight it! Call the sick thoughts, from a sick brain LIARS!

It is the number one symptom we all share - no matter how different, we all are way too hard on ourselves, and out of everyone in the world we should love and forgive, we deserve it the MOST!!!!! LOL sorry, this is what works for me - and I Work Hard! It's a climb, but the peace and comfort on the other side? So worth it! People like us, have more gratitude and pleasure when we grow and improve!

http://www.dbtselfhelp.com/html/mindfulness.html

That link may help you learn about DBT (dialectical behavior therapy) and the skills that go along with it. DBT was formulated first for borderline personality disorder and it showed such great results that it is now offered to all kinds of people with mental disorders (not just borderline anymore). If you are in therapy you could ask about this class or perhaps find a facility that offers it. Otherwise you could look at this site and learn what you can and it will help you to a degree even without the classical DBT class.

First learn or become of aware of the mindfulness section. This is what the whole practice is based on. Try and learn those steps as best as you can. Pay attention to using "non judgmental stance". From where I sit I see you need to use non judgmental stance to get through your difficulties without further judging (and hurting) yourself. It takes awhile to get used to and you will never be fully non judgmental but your peace and contentment level will go up. You will feel much better.

It is okay to be kind to yourself even when you make mistakes big or small. You are worthy of your own unconditional love. :)

I have to agree, it is a slow process but as long as you think negatively you will feel negatively about yourself. Good and positive thoughts help and time.