Memory .

mem⋅o⋅ry
  /ˈmɛməri/ Show Spelled Pronunciation [mem-uh-ree]

1. the mental capacity or faculty of retaining and reviving facts, events, impressions, etc., or of recalling or recognizing previous experiences.
2. this faculty as possessed by a particular individual: to have a good memory.
3. the act or fact of retaining and recalling impressions, facts, etc.; remembrance; recollection: to draw from memory.
4. the length of time over which recollection extends: a time within the memory of living persons.
5. a mental impression retained; a recollection: one's earliest memories.
6. the reputation of a person or thing, esp. after death; fame: a ruler of beloved memory.
7. the state or fact of being remembered.
8. a person, thing, event, fact, etc., remembered.

for this is the best damn thing in my life , i want to say thank you .