Some opportunities do not disappear; they simply become memories of what you almost did.

Some possibilities do not vanish dramatically. They stay technically available for years while quietly becoming things you think about rather than things you might do, and at some point the shift is complete without any decision being made. The regret is not about failing at something. It is about never having found out.

Name one thing you would attempt if you were certain nobody would judge the outcome. Then do the smallest version of it, the one that costs almost nothing. Finding out is usually more valuable than protecting the possibility.