iStock/ThinkstockBy DR. JENNIFER ASHTON, ABC News Senior Medical Contributor

You plan a workout for the evening but then something comes up — a happy hour, a deadline for work — and there goes your exercise for the day. Sound familiar?

If this keeps happening to you, there’s a logical solution: Try shifting your workout schedule to the morning. But for some, that’s easier said than done.

Here are a few changes you can make to help you become the person who wants to rise and grind:

• Set a bedtime and try to stick to it.

• Find something to look forward to — motivation through excitement.

• Have a morning workout buddy.

• Think of your workout like brushing your teeth. You know it has to get done.

Getting to the end of a packed day and remembering you already trained hard 12 or more hours earlier is a great feeling.

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