hello @franyeligonzalez,
it is said that motivation is just having a motive to take an action towards a goal, but just having a motive is never enough, instead discipline allows you to do what you have to do whether you feel like it or not, discipline is always the factor that makes the difference between those who do achieve success and those who only dream of achieving success, so it is better to be disciplined and not just get excited about a goal.