Without ambition, one starts nothing. Without work, one finishes nothing. The prize will not be sent to you. You have to win it. – Ralph Waldo Emerson
To succeed at most things in life, you must have persistence. Persistence requires focus, action, and discipline. Without these three components you will flounder on your way. Focus keeps your mind on what you want to accomplish. Action moves you in the direction you want to go. Discipline keeps your focus and your actions thus minimizing effort you will use to get there.
Set goals to focus your mind. If work related, make sure that goal points you towards the company goals and objectives. Write these goals down and review them every day and any time you find yourself feeling discouraged. Since you will read them when you get discouraged, make sure to write these goals in a way that motivates and encourages you.
Take action towards these goals. Without action, you have no movement. Plan your day with actions that move you towards your goals. You may want to schedule every minute of your day in the beginning. Just make sure you schedule time for action.
Discipline yourself to do the right actions throughout your day. You may get distracted, but your discipline will take you back to your focus and get you back on track with the right actions.
To succeed, discipline yourself to take action in a focused direction.