Use Leetcode, it's a tremendous resource. Maybe even get the paid version. Please don't feel bad, it will be a waste of your time. Sole developer at a startup

Use Leetcode, it's a tremendous resource. Maybe even get the paid version. Please don't feel bad, it will be a waste of your time. Sole developer at a startup is not the definition of a loser. And if mental health takes a toll, get help. Talk to a counsellor / psychiatrist, they are the pros. Realise that no matter what bootcamps sell you, knowing computer science theory will get you a long way. If you are doing something that even a 16 year old could do, you are not using your knowledge well or you need to study more. Nothing wrong with that. Write down your plans and actions, then you can have as much fog as you want in your head, you can always refer to the piece of paper. Lastly, I don't know what being a loser is objectively and I am pretty sure neither do you, so why bother with a stupid label.