Hhmm.... You have asked a very good question shattered. How do you forgive (in general)?
I'm going to share what I did.... I don't know if it will work for you.
In no particular order:
1. To help in the healing process, I do not have the people who harmed me near me at all. I remove them from my space, so that I may move past whatever it is. I keep them out at all costs, since I know they are detrimental to me.
2. I take a "That's okay." approach, as in "That's okay. Don't worry; you won't catch me again." "Yeah, it hurt me, but that's okay."
3. From those situations, I try to take something away from them. (Learn something that will help me not to get hurt again.)
4. I usually talk out loud about the problem (but where no one else can hear) & curse if I must. (You dirty dog blah blah blah blah....)
5. Remind yourself that you're doing this "forgiving" for yourself & not them. (As far as you're concerned, you could careless if they rot.)
6. I also make sure to explore how I really feel about people. (For some people, if we happened to be in the same area & they dropped down on the ground & were dying, I know I wouldn't even want to help them. I acknowledge it & don't kick myself for feeling that way. That's just how I feel & who doesn't like it can love it. Get what I'm saying?)
7. Log/write if you must. Listen to music. Cry if you must, but make sure you tell yourself each time that you're not going to waste your time on those no-good folks any more. You can't cry forever & don't intend to do so forever & you make an effort at it.
Do just a little bit at a time or what you can & you will triumph. Make sure not to fall of the horse with it (meaning continue to make an effort at letting whatever it is go), but if you fall off the horse, get back on it. If a horse isn't an appropriate visual, then you know, you can pick something else.
8. After you've done some of this enough & feel like you have more control, I do a final exercise, which gives me a visual.
Usually I'll put on some music or something that makes me feel powerful (invincible almost) & what I will do is put them on (like a certain music track, earrings, whatever), something that makes you feel wonderful or made you feel really good in the past.
I stand up, clutching/wearing/listening to my favorite item in 1 hand, & I banish it for good. I'm right-handed, so I put out my right arm in front of me & proceed to blast it away. I visualize the situation, the evil, my feelings & every thing & tell it to "go away forever". It's a sort of "Leave me the f*** alone because I'm tired of this."
The visual is your chance to do with it what you would have wanted to do. If you wanted to kill it, there's your chance. If you wanted to curse it, there's your chance.
From that point, do your best not to think about it & not to talk about it for a good while. & if you start, stop & tell yourself to stop, that you dealt with it b4 when you blasted it away into nothingness, that you're not going back there again to dredge it up & reopen old wounds, that you are reclaiming your life, & that you are deserving of happiness, peace & good things.
If people don't want to treat you properly, REMOVE THEM FROM YOUR LIFE. I'm saying this because I have been there myself.
9. Lastly, you're much stronger than you think you are. Even if you are "weak", you still have some strength left or strength that can be created. Its finding it, channeling it & making it work for you.
10. Don't tell yourself you can't. That's another big no-no. If you do, you make sure to tell yourself you can & say that to yourself regularly. Most importantly, banish the negative self-talk or it will be very difficult to get anywhere you really want to go. If you tell yourself you can't or say never, you probably won't.
You don't have to be 'shattered' hopes all the time; you can be a different kind of hopes. gleeful hopes, hopeful hopes, joyous hopes, hanging on hopes.... Hope that makes sense.
Hope this helps you out a bit.