Gambling and nagging are good examples. Being open and honest, bragging, being seductive and flirting, working extra without pay, reading a self-help article and so on, only occasionally yield a payoff. On the other hand, when too much work is required for the payoffs, we usually begin to lose interest and the behavior declines. Behavior that has at one time served a useful, obvious purpose and become well established may continue long after it is needed. However, a rich person may continue to be a Scrooge when it isn't necessary.
Frugality continues because it still feels good to save and be shrewd.
The effective rewards are still there, they are just internalized. After being dumped, a lover may avoid loving anyone else for a long time. Keep considering your choices. The rejected person can love again, the workaholic can relax, the greedy can be generous. But only if they think about changing.