Could you recommend another philosophy worth exploring? As someone who's relatively new to Stoicism, I've found the four virtues (wisdom, courage, justice, and temperance) to offer valuable guidance for living a balanced life. I'd genuinely appreciate hearing more about your perspective—why do you find Stoicism vacant?
I'd suggest the Word of God (Bible). It's full of wisdom which includes the four you mentioned. It can also give you access to our Creator on a personal level, forgiveness for sins you've committed, eternal life, inner change driven by God Himself, and prayer He actually answers. It's pretty awesome.
I usually give people John above. I tell them to ask God to speak to their hearts about the truth. Then, read it all the way through. Ask as you read: "Who is Jesus? What is our problem? How does He say we will be saved? How do we live?"