One step after the other.
If you decide to walk a thousand miles, & you want to do it in a certain time frame, you have to set yourself a goal to rise early every day, start your days walk knowing that even if it hurts at times along the way you have to continue putting one foot in front of the other until you get to the finish line each day, knowing that you have to do the same again day after day until the thousand mile distance is completed.
If you want to succeed in anything in your life, It is important that you are in the same frame of mind. The finish line is set & it is up to you to get there, you set a goal & as you travel along that rugged trail you have to continue making decisions about how to navigate the different obstacles as they appear before you, Some you may have some notice & others may appear like a crevasse & it will be up to you to make some quick changes to allow you to navigate around them.
The destination should be so important to you that no obstacles should prevent you from the benefits of getting there. Preparation can be one of the best preventatives to the challenges ahead, studying the trails that have been traversed by others before you.