Happiness from motivation - Call Center Blues

I've been working in a big call center in my city for 1 year and 6 months now and during that short time, I have experienced a lot of things already. I got promoted last 3 months ago to an SME or Subject Matter Expert. I am one of the people who are helping new agents (Newbies) so that they can get good scores and pass training. During those 3 months, I have met a lot of people with different stories. Some people work in a call center because they want to buy something, for their family, or sometimes just for fun. I realized that these people have different attitudes and stories. Once I enter the room during our pre-shift meeting which is a meeting for an hour before they take in calls, I see most of them are smiling. I start to talk and talk regarding in how to improve on their calls but when I talk to them personally, they have different problems and they are undergoing things that I can't even imagine. They are also broken. I thought that my life was not good, but after hearing their stories, it made me think that I am a lucky person but they still have the strength to smile and be happy. That made me realize one thing. I need to help these people to pass and make a career here in the company. I am now a happier person because of those trainees. Their motivation to work and earn money for whatever reason they are doing it made me happy. There are people who will do their best in order to achieve something. Maybe that pushed me to do better too and you should too. Do your best everyday and be happy. Be thankful for the things that you have and push yourself to strive or aim for a higher goal.