What I always found interesting was you can go as fast as you want - to you, going from here to alpha centauri could take just weeks for you if you had enough energy - it's just that time would speed up around you so no matter what everyone else would see you get there in 4.5 - 5 years.
And if I'm wrong, I apologize and would gladly hear the correct answer.
And if I'm wrong, I apologize and would gladly hear the correct answer.