You know at some point the 401k is supposed to be paying your bills, yes? That's its raison d'être. When you have investments paying your bills, you might understandably be focused on those investments yielding some immediate returns. Maybe to pay for that leaky roof, or broken down AC...
Any short term returns from the market should be remarkably small per individual managed by a firm. It's the long term growth that you're banking on when you prepare for retirement years in advance.