don't try too hard to forget and fight bad memories...
I don't think our mind or heart works that way...
I think when people try too hard to forget, in the end they are
simply forcing themselves to think harder...(it's the "i dont want
to THINK OF THIS! syndrome)
Just be patient, when the bad memories come, don't fight
it...
learnt to digest it, learn techniques to handle it (like doing
something meaningful for your family or others)...
and slowly the bad memories will fade away. Time is a great
eraser but you need to let it do its work for you.