Most people spend decades working hard, saving what they can, and doing their best to prepare for retirement. But along the way, there are a few common mistakes that can quietly chip away at a solid retirement plan.

Here are five we see all the time.

1. Waiting Too Long to Start Planning

A lot of folks say, “I’ll get serious about retirement planning next year.” Next thing you know, retirement is right around the corner. The earlier you start planning, the more options you have and the less stressful things tend to be later on.

2. Relying on Just One Source of Income

Many people assume Social Security or their work retirement plan will be enough. But retirement is usually easier when you have more than one income stream working for you.

3. Underestimating Healthcare Costs

Healthcare expenses can add up fast in retirement. Between Medicare, prescriptions, and possible long-term care needs, medical costs can take a bigger bite out of savings than most people expect.

4. Carrying Too Much Debt Into Retirement

Debt can put a real strain on a fixed retirement income. Paying down major debts before retiring can make life a whole lot more comfortable later on.

5. Not Having a Plan for the “What Ifs”

Life happens. Illness, market downturns, or unexpected expenses can throw a wrench into even the best plans. A good retirement strategy prepares for those bumps in the road before they happen.