The day that i smoked weed please help?

It Was About 2 to 3 years ago idk i smoked like 3-4 blunts of purpple haze nd everysince that day i dont feel the same i feel like everything is a dream/fake please help me im 16 now and i still feel the same if you can please help me i would be very happy thanx for all the answers you give me. anything helps