From Forbes — 

Almost all retirement planning focuses on finances. That’s unfortunate. The state of your finances determines retirement success only up to a point. Surveys of retirees make clear that satisfaction in retirement rarely hinges on finances. 

People in similar financial positions in retirement often report very different levels of satisfaction. Retirees can be more satisfied than those with substantially more wealth. That’s often because the less-satisfied retirees neglected a key part of their retirement planning.