It is noted that there was an Important idea in ancient Greek philosophy which is "Nothing comes from Nothing" and an explicit statement of this along with the further principle that nothing can pass away into nothing was found in Empedocles (490 BC - 430 BC). It is said that the third theorem of Sir Issac Newton, a great scientist explains the same idea that was expressed by Empedocles. As for the period of these two stalwarts are concerned, Sir Issac Newton belongs to 18th Century,whereas Empedocles belongs to very early century namely 490 -430 BC. It may be astonishing to note that what was advanced by a scientist in 18th century was very easily pronounced by a great Greek thinker, Empedocles in 430 BC i.e. about 2200 years ago without any scientific instruments for his support.

According to Empedocles, the cosmos is a sphere and is divine (Hippolytus, Ref. 7. 17). It began in a state of unity in which Love has brought the four elements together into complete homogenization; Strife was relegated to outmost boundary of the cosmic sphere. He explains,

[link to www.abu.nb.ca]
[link to www.philosophy.gr]

OP's comment

I posted the above quotes and links to prepare your minds for what's coming,
by reading the above and realize the universal law "nothing comes from nothing" now you have the ultimate proof that you always existed.

I won a debate with an extremely fanatic christian creationist easy by asking simple questions.

Op-So you believe that before God created you you didn't exist nowhere at all?
Christian-Yes
Op-For a man to build/create a house a car a bike anything first that thing needs to exist on his mind otherwise he cannot build it. So your god before he created you you existed in his mind correct?
Christian-(Long pause almost lost her mind from the shock)
The ideas come suddenly in our minds they don't exist
Op-So your God that knows everything that even knows things that haven't happened yet he didn't know about you but you suddenly popped up in his mind and he created you?
Christian-(walked outside embarrassed).

So right there folks in just 3 questions the\is christian was forced to reboot his mind and think everything all over again.
The above was a warm up to prepare you for some serious questions.
1)If you always existed why you can't remember anything before your body was born/built?
2)What happens to you/your consciousness when your body dies/recycles?
3)What is the secret of life Empedocles was talking about?
(Wise people, who have learned the secret of life, are next to the divine, and their souls, free from the cycle of reincarnations, are able to rest in happiness for eternity).
4)Are there any dangers/traps i should be worried about after i loose my body?

The answers to the above questions can be found in the link below.
Thread: The Real Death - Memory Erasing!
or by googling these.
The real death/memory erasing.
Cancerous entrapped reincarnation.