It is said God is obvious enough that those who seek Him can find Him, but hidden enough that those who reject Him can’t see Him.
There is no single “proof” which can convince everyone that God does or does not exist. But for anyone who is open-minded about the possibility that God exists, there are many convincing proofs which added together make it more probable than not that a Creator made everything, including you.
To be honest, there are arguments against every “proof” that is suggested, but the only right proof for you might be found in understanding what your own reason is for not trusting God.
In any case, here are some reasons to believe there is a Creator.
“Proofs” for God:
Why is there Something rather than Nothing?
More of Everything from Nothing. Part One.
More of Everything from Nothing. Part Two.
Thomas Aquinas’ Argument (Proof) from Motion.
The Fine Tuning of the Universe. (Perhaps today’s most persuasive argument for a Creator.)
Another explanation of the Fine Tuning of the Universe argument.
Origin and Fine Tuning of the Universe – Dr. Stephen Meyer
“God DOES Exist” – Professor John Lennox