Past always haunts us. But we as individuals have the ability to control our thoughts. Try engaging yourself in different activities - Go out, listen to music, indulge in a hobby etc. Moment you sit ideal, you start thinking about things. If you still cannot control your thoughts then consult a Clinical Psychologist.

Our past bad experiences gives horrible present life many times,  have you tried speaking to someone about your hard times back then and the impact of.  It? To someone who do not judge you? If you don't get anyone in your circle, try it out with a counselor,  it may not need medicine.

R u feel iriitble or alone? Mostly

Hi Don't give a bad memory enough time to change your mood or make you feel anxious; instead, the moment it comes into your mind, shift your thinking to a happier memory. Keep practicing positive thinking until you no longer automatically fall into the same old mental ruts. Try pairing your bad memory with a good one You need to process past memories. Consult with me or any psychologist for therapy and counseling All the best

Yes, it is duff to come out of the past.. Yet, if you want to lead a peaceful life, you need to learn to Live in the Present. For more details and clarity, do consult a psychologist either online or offline.