Try any moderate-difficult level Himalayan treks.. all are equally thrilling.. if not enough.. do a snow trek in peak winters such as January.. but have proper fitness before attempting one
Hi Amit, I suggest you to do Sar Pass Trek this summer for most thrilling experience.
Its an amazing snow trek to get chill and experience Himalayas flavor.
Also go for Hamta Pass and Chandratal Lake trek( in June), Kedarkantha Snow trek ( in winters).