Join Date: Aug 2011
Location: Planet Namek, Australia
The only way to really do it so it's liberating is through presence. Of course your memories will still be there but your identification with them won't. That's the real problem, identification with thoughts. Almost everyone thinks they are their thoughts when really they're the awareness behind their thoughts. When you're present which is basically resting your awareness in the present moment, you stop having unnecessary thoughts about the past and future.
It depends on how present you are and that's where the practice comes in. A good way to find that space of presence is to honestly ask yourself "I wonder what my next thought will be?" You'll experience a moment of no thought, creating space between you and your thoughts (and emotions), that's where you want to be. It's not like you won't ever think again but most of your thoughts will disappear, you'll realize that you don't need 70% to 90% of your thoughts.
It can be very challenging but it's worth practicing. I've been doing it for years, sometimes I forget about it, I'm not very good at it but I always have a level of presence when I really need it. Healing past trauma can help with negative memories, you can do that with specific healing meditations, therapy if you're lucky and cover it up with medication. But really what you want is presence, it's the most direct and primordial way which leads to enlightenment which is what everyone is after.
I should mention that being present doesn't fight or push away thoughts, it actually allows you to accept and surrender to then and what is happening. Surrendering doesn't mean not doing anything, it clears up your consciousness so you can take clearer action.