Promise yourself:

To be strong that nothing can disturb your peace of mind.

To take your health, happiness and prosperity to every person you meet.

To make all your friends feel that there is something worthwhile in them.

To look at the sunny side of everything and make optimism come true.

To think only of the best, to work only for the best and to expect only the best.

To be just as enthusiastic about the success of others as of your own.

To forget the mistakes of the past and press on to the greater achievements of the future.

To give so much time to improving yourself that you have no time to criticize others.

To be too large for worry, too noble for anger, too strong for fear, and too happy to permit the presence of trouble.

To think well of yourself, and to proclaim this fact to the world, not in loud words, but in great deeds.

To live in faith that the whole world is by your side as long as you are true to the best that is in you.

To wear a cheerful smile at all times and give same to every living creature.

And these are the creed of an optimist.

— Author Unknown

Meditation: but one thing I do, forgetting those things which are behind and reaching forward to those things which are ahead, – Philippians 3:13

You will succeed in Jesus Name!

Also read:

Optimism
Words of Great Wisdom
What You Can Benefit from the Word