I write resumes for a living and give career consultations. Maybe 5% of my clients come to me with similar issues - they have accomplishments and work history, but really struggle to identify direction for their next move. During the writing process, I ask questions about things they did, and I've typically found that the things people talk about the most (or in the most detail) tend to be the things they are best suited for.
Start writing about what you did at your startup - things you were ultimately responsible for, things you are comfortable 'taking credit' for, etc. When you've done that, look back and see if you can identify any themes in there.
Don't worry about the startup failing, there are literally millions of people with similar stories of being part of a failed startup or even several. Look ahead while also thinking about what you learned during the process - what would you do the same way, what would you do differently.
Start writing about what you did at your startup - things you were ultimately responsible for, things you are comfortable 'taking credit' for, etc. When you've done that, look back and see if you can identify any themes in there.
Don't worry about the startup failing, there are literally millions of people with similar stories of being part of a failed startup or even several. Look ahead while also thinking about what you learned during the process - what would you do the same way, what would you do differently.