I am looking for a word that has the same meaning as "life experiences."
I tried to use legend, but I think it is too big for an individual person like me.
The collection of one's life experiences, incidentally, is called "life."
4 The physical, mental, and spiritual experiences that constitute existence.
Words often have narrower and broader meanings, different meanings from different perspectives, and so on. Sentence construction and context generally help to understand.
I think knowledge can express the concept: ( from TFD)
- Familiarity, awareness, or understanding gained through experience or study
- Facts, information, and skills acquired through experience or education.
(Personal) background is one possibility. (Personal) history is another.
It's not very clear just what you are looking for. Try to formulate a sentence that expresses what you want to say, and put "____" in place of the missing word.