Why persuasive expression? For inspiration! You may need quite a bit, in which case you can use last year's goals for this year because it's all great. We can all benefit from passionate meditation, so the following are exceptional.
"Be more concerned about your personality than your standing. Your personality is who you really are while your stance is what others perceive you to be." - Dale Carnegie
"Try not to pause; the timing will never be perfect. Start where you stand, and work with whatever tools you have at your command, and get better as you go." The equipment will be available." — Napoleon Hill
"What is behind us and what is before us are the little matters that exist within us". - Ralph Waldo Emerson
"Some men look at things as they are and say, "Why?" I wish for things that never were and say, "Why not?" - George Bernard Shaw
"A little difficulty is like a stone. Hold it too close to your eye and it cancels out the whole world and throws everything into focus. Hold it at a fair distance and examine it. Go and set it in proper order. Throw it at your feet and it may very well be found in its original order, just another little knock on the road of life." — Celia Luce
"However, one cannot come back and make a shiny new start, one can start over and finish early." - Carl Bard
"I'm not telling you it will be easy - I'm telling you everything will work out for the best" - Art Williams
Persuasive sayings - Attitude
Temperament "There is a small difference between individuals, but that small difference has a big effect. The small difference is the mood. The big difference is whether it is positive or negative." --.W. Bearing Stone
"Nothing in existence can prevent a man of perfect mental action from fulfilling his purpose; nothing in existence can help a man in an unacceptable state of mind." - Thomas Jefferson
"An individual cannot simply choose his circumstances, but he can choose his thoughts, thus forming his circumstances in a roundabout, yet unmistakable manner." - James Allen
"A man often becomes what he believes himself to be. On the off chance that I keep telling myself that I can't do something special, it's understandable that I really want to do it." I'll end up being incompetent. In fact, assuming I believe I can do it, I'll undoubtedly have the ability to do it even if I don't have it to begin with." - Mohandas Karamchand (Mahatma) Gandhi
These are statements that mean something to me. Ideally some of them are motivating you in the same way. If not, maybe they'll inspire you to create your own inspirational sayings.