One of the biggest changes I made during my weight-loss journey had nothing to do with food or exercise. I stopped negotiating with myself.

We all know the negotiations. I’m tired today. I’ll work out tomorrow. I’ve eaten well all week. I deserve this. It’s been a stressful day. I’m traveling. It’s the weekend. I ’ll get serious again Monday. The problem is that every one of those negotiations has two people sitting at the table: the person you are today and the person you say you want to become. And your future self doesn’t get a vote.

There is more information available today than ever before about nutrition and exercise. There are unlimited resources to help you understand what foods you should be eating, and if you need more individualized guidance, nutritionists and registered dietitians can help you build a plan that works for you. There are gyms, trainers, workout programs, apps and resources everywhere.

But access to information isn’t the same thing as putting it into practice.

That’s why I believe weight loss is about 5% food, 5% exercise and 90% mindset. You can eventually figure out what you should eat and how you should move, but none of it matters much if you continually negotiate your commitments away when they become inconvenient.

And here’s the tricky part: most excuses are legitimate.

Sometimes you really are tired. Work really was stressful. Your schedule really is packed. The weather really is terrible. Traveling really does make eating well and exercising more difficult. Your kids really do have activities every night this week. That’s why excuses are so effective. They’re usually built around something that’s true. The question isn’t whether your excuse is valid. T he question is whether you’re going to allow it to make the decision for you.

There have been countless mornings when I didn’t want to run. There have been plenty of days when eating whatever was convenient would have been easier than eating what I knew I should. I’ve traveled, worked long hours, dealt with injuries, bad weather, family obligations and all of the same disruptions everyone else experiences. I didn’t magically become someone who never had an excuse. I became someone who stopped giving every excuse authority. That distinction matters.

Sometimes circumstances genuinely require you to change the plan. Maybe today’s five-mile run becomes a two-mile walk. Maybe you can’t prepare your normal meal, so you make the best choice available. Maybe your schedule gets blown apart and the workout has to happen at a completely different time.

That’s not failure. That’s adapting without abandoning.

There’s an enormous difference between modifying the plan because life happened and using life as permission to quit on the plan altogether. Every time you keep a commitment to yourself, especially when you have a perfectly reasonable excuse not to, you’re casting a vote for the person you’re trying to become. And every time you repeatedly negotiate those commitments away, you’re doing the same thing in the opposite direction.

One decision won’t make or break your weight-loss journey. But repeated decisions eventually become habits, habits become your lifestyle, and your lifestyle produces your results. That’s how I eventually stopped thinking about this as losing weight. I was building a different person. A person who exercises even when motivation isn’t there. A person who makes better food choices most of the time. A person who doesn’t need Monday, January 1st or some future version of life where everything finally becomes convenient. Because that version of life isn’t coming.

There will always be work. There will always be stress. There will always be birthdays, vacations, holidays, bad weather, busy schedules and mornings when the bed feels better than whatever you promised yourself you were going to do.

So the next time you catch yourself beginning that negotiation, ask yourself one question:

Am I solving a legitimate problem, or am I selling my future self another excuse?

Your future is being built either way.

The only question is who’s winning the negotiation.