Abundance is partly arithmetic and partly a habit of counting. The same fridge can look bare or perfectly adequate depending on whether you opened it hungry or after a day of not thinking about food.
The habit shows up in what you are willing to lend. People who feel they have enough hand things over — a drill, a spare hour, a name worth calling — and the handing over is what keeps a network warm enough to be useful later.
Some weeks are genuinely thin, and no amount of counting alters that. Most are not, and get counted as though they were.