Launching my very first web application tomorrow. Any tips? (Solo founder)

Tomorrow I’m launching the first real web app I’ve ever built completely solo. No team, no funding, just persistence, caffeine, and too many late nights.

I’m excited, nervous, and honestly still fixing tiny bugs as I type this.

If you’ve launched something before, I’d love your advice on:

• How to handle launch-day anxiety

• What absolutely must be double-checked before going live

• How to get those first real users and keep them engaged

• What to avoid on day one so I don't crash everything

• Any mindset tips for a solo founder pushing their first product into the world

Appreciate any wisdom tomorrow is a big day for me.

About my product (launching tomorrow):
I’m launching PromptAlphabet, a social platform where people can share, remix, and discover high-performing AI prompts for ChatGPT, Claude, Gemini, Grok, Midjourney, etc.

Think of it like a social network built specifically for prompt engineers, creators, and AI power users.

📌 Key Features
• Multi-AI support (GPT, Claude, Gemini, Grok, DeepSeek)
• A feed of prompts with AI-generated responses
• Daily AI challenges & leaderboards
• Offline-first posting
• Bookmarking, remixing, following, and search
• Clean UI with color-coded model indicators

I built this because prompt libraries are boring, static, and outdated so I turned prompts into a social experience.