You have a plan. A time-traveller from 2030 appears and tells you your plan failed. Which part of your plan do you think is the one that fails? Fix that part.
Discipline is superior to motivation. The former can be trained, the latter is fleeting. You won’t be able to accomplish great things if you’re only relying on motivation.
Compliment people more. Many people have trouble thinking of themselves as smart, or pretty, or kind, unless told by someone else. You can help them out.
When you ask people, “What’s your favorite book / movie / band?” and they stumble, ask them instead what book / movie / band they’re currently enjoying most. They’ll almost always have one and be able to talk about it.