How can I forget about the bad memories of my past?

By learning to confront those memories, not repress them, and by then using that acceptance to grow.

Accept the memories and face them directly. When you truly understand why you felt so bad about it and know either you can make a change or it doesn't influence your future anymore, maybe things will work out better.

Believing that memories are just memories. They do not control you. :) Participating in healthy, positive activities is also helpful in keeping mind off of things.

The short answer is – you can’t. Your past is forever a part of your life. The best thing to do is put it into proper perspective. Whatever happened in the past is done, gone, and behind you. There is nothing you can do to change it. At this point it is simply a fact of life. If there are things that you did that you are ashamed of, apologize and atone for your misdeeds and move on. If you are analytical and introspective, you’ll likely learn that what you did was 1) the result of your knowledge and expectations based on your experiences throughout life and 2) the fact that you are human and have certain innate human needs. If the past that haunts you are things that other people did to you, hold those others accountable for their own behavior and don’t take any responsibility for their actions. Be empathetic and understand that they also are responding to their life’s experiences and human needs. At the same time, as you move on in life, be careful to avoid other people’s problems that have brought pain into your life. Above all, remember that you are human. Be kind to yourself.

I would say it's hard to forget the bad memories, seeing as they were really defining moments that really impacted your life. I think instead of trying to delete the bad memories, create great ones; do things that you really like with people whom you really like. And make it a point to do a variety of things with different people.

I've often wondered how I can forget the past and bad memories that can come along with it. Unfortunately, this is impossible. A part of you will always remember some of the bad or traumatic things that may have happened in your past. However, the good news is that it won't hurt as much, and with time, the memories will fade and won't be as vivid. Given enough time, you will only remember these things once in a while. It gets easier to forget your past as time passes by. All things will pass. : )

Bad memories are very easy to get stuck in one's head. I myself have a lot of bad memories. Ultimately, I've managed to start putting my past behind me by focusing on making new, better memories, to be in my thoughts more than the bad memories. That's not to say I forget all of my bad times. I sure don't focus on them, and start each day fresh, But I keep the bad memories of my mistakes. I don't let them bother me as there's nothing I can do to change them save for making sure they don't happen again. Which is why I remember. I try to let go of a bad memory if isn't about what I'm doing right then, and it was never my fault to begin with. Ultimately, the best way to stop thinking about bad memories in general, is to hang out with a friend, or even by yourself, and do something you enjoy, so you can make some better memories and different thoughts to replace the bad ones with. It takes effort to get the ball rolling with it, but it gets easier.

Don't, embrace them and move on. If you try to forget about them, they will only haunt you continuously.

Forgetting is next to impossible. But you can let go of the pain your past is causing you to feel. Each moment in your past that causes you pain, there's someone or something that hurt you in some way. Forgive them; forgiveness is key to everything. Forgive but never forget, because it definitely teaches some valuable lessons.

why do you need to forget them? keep them in your mind as a lesson and learn from it everyday :) only that way you can grow :D