戊 is the yang face of earth: mountain, embankment, city wall. Its function is to block and to bear — a mountain doesn't move, which is why things beside it have somewhere to stand. That function decides 戊's situation: it is supporting whether or not anyone looks, and support is invisible while things are going well.
You'll recognise it here: when things get worse you get steadier, which isn't courage but your default; people put heavy things down at your feet without thinking, feelings included; and you rarely say you can't hold it — you may never have considered that saying so was available.
Running well, 戊 is everyone's ground: with you there, it doesn't come apart. That value has a structural problem — it's only visible in absence. So being taken for granted is the normal condition rather than particular ingratitude. Blocked, 戊 blocks too much: carrying what was never yours, hardening quietly, until even the people you care about can't get close. The tradition says 戊 needs 疏, something to loosen it. So its hardest and most necessary lesson is saying 'I need' out loud. A mountain won't speak for itself, and it still needs someone beside it.
