Optimism is defined such as "hopefulness and confidence about the future or the successful outcome of something".
This factor in once not only happiness, but success is a key part of once well being. This human made idea and human driven emotion if you will can determine if completion of hard work will follow. Hard work is defined as "a great deal of effort or endurance". This effort cannot be created if one does not have that vision or the drive to be able to succeed the work set out.
Hard work is not defined simply as only physical effort, but as mental effort.
Before you set foot into your work boots, you have to plan, have confidence in the plan, and initiate the start.
As you are going about your plan, if it's a physically calling plan, your mind is always running. Even when you stop physically working and you try to rest. Sometime you are so excited and driven to complete your goal that you can't sleep.
If you remained optimistic throughout your goal or task and didn't complete it, please know you did not fail. you have more time set out for you. This was not meant to work out. All it means is there is something better waiting for you in the future. No one is perfect, so you gotta keep setting goals and keep up with the optimism.
Keep on running that engine!! When it dies out, only you can make it go again!!
Keep striving for greatness everyone! You got this!