Great point, Justin. God willed this life to be a test. If He showed Himself to His creations, then everyone would believe. However, he has placed signs throughout the earth and the heavens, and even in our own selves...in order that those WHO THINK and PONDER may recognize God and His inifinte power.
An amazing observation to note is that even the biggest self-proclaimed atheist when faced with death in the most desperate moment of his/her life (for example, a plane crashing or a boat sinking) will call out to God by saying 'Oh God!!' Never will you hear them say 'Oh Monkey!' or 'Oh Darwin!' This is something that God has instilled in our nature...deep down inside, we all know there is a higher force no matter how hard we try to convince ourselves otherwise.
The truth of the matter is that God has sent Messengers throughout the human era in order to guide the people unto the truth after they have strayed. And all of the Messengers, ie. Prophets called to the same thing, which is the worship of One God. They would tell people: 'Don't worship the stones and statues, don't worship each other, but rather worship the One who created you and everything around you...the only One who truly deserves to be worshipped.'
I don't wish to keep going (because I could honestly go on for hours, weeks, and months about this topic)...but, if you truly believe in the existence of God, then don't you think that He will guide you IF you sincerely ask Him? The call out to Him could be as simple as: "Oh God, if you're out there, guide me unto Your path!" It has to be sincere, and leave the rest up to Him.
Wishing you all well!