If only we had done better planning when the project started we wouldn't be in this position right now.
If only we had known the requirements better; if only we had the right resources; if only we would have worked harder; if only I would have studied harder when the year started.
There are two things you can do about If-Only based introspection.
- Work hard to avoid them in advance.
- Be aware that you cannot eliminate them and understand they in spite of how hard you work these scenarios will always exist.
There'll always be one open "if only" scenario in your product, project or what ever it is that you ship. You'll always start working in the wrong time; you'll always be short of resources; you'll always be short of time while shipping.
The only value if-only based evaluation provides is educational; so that you don't make the same mistakes again; the next time. For now, this time, you'll just have to befriend those "if only" thoughts, embrace them and move forward anyways.