Memoirs are not about “what happened next”. In fact, the events can be relatively mundane, or even relatively few. Let go of the idea of a linear, chronological plot, based on what happened. The real stuff of memoir is what lies between the events – the reflections on meaning.
If you’ve ever kept a diary or journal, you will see that reflection far outweighs events simply by glancing through your back pages. I would expect there are entries where you have explored important ideas at length. Other entries are shorter, more reportorial. Which are better? The more reflective passages. In fact, you will find that some of these best reflective passages have very little to do with the events that precipitated them. They are more complex and far-reaching, a heady exploration of cause and effect, revelation, and conjecture.
This is the best stuff of memoir. The depth of your reflections is not limited by any external measure of dramatic action. The quality of your reflection is not limited by the person you were; although you may have been a callow youth while an event occurred, you are writing about it now. What does the mature, wise you of today have to say about what it all meant?