What AI tools have genuinely changed the way you work or create?

For me I have been using gen AI tools to help me with tasks like writing emails, UI design, or even just studying.

Something like asking ChatGPT or Gemini about the flow of what I’m writing, asking for UI ideas for a specific app feature, and using Blackbox AI for yt vid summarization for long tutorials or courses after having watched them once for notes.

Now I find myself being more content with the emails or papers I submit after checking with AI. Usually I just submit them and hope for the best.

Would like to hear about what tools you use and maybe see some useful ones I can try out!