Since childhod its extremely difficult for me to remember things and numbers. what should i do for betterment of my memory.

There are many: Mnemonic (memory) devices & " peripheral brains, " (e.g., smart phones or tablets); however, a neuropsychological evaluation will define your strengths & weaknesses in attention, memory, & ability to process verbally & visually presented information. The neuropsychologist will make recommendations for accommodations & adult-learning programs that address your specific deficits.