I chose the laugh emoticon because I find humor in this.
Some days, it does feel like a battle getting up and having to deal with clients. To put up a front and pretend to know better because that's your job. And it's your task to help them, so might as well put your heart to it.
But some days, you don't feel like it. That's okay. You can't always give your best every day, and your best may vary each day. You're human.
Still, try not to do real important stuff or make critical decisions when you don't feel like you're in it fully. Less risks of making mistakes and causing damage or hurting others that way.
Cheer up.