Bad memories in life are so clingy, that they chase us at every step / every phase of life. Those past experiences are so painful, they leave the impression in our mind, which at some points do remind us of that experience unknowingly.
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But still I believe we should move on like a milestone, strongly. By the passing time its going to be erased from our mind also. Time is the biggest medicine.
We should cling with the present instead of past with full determination & focus, which is going to help us in shaping our bright future.