This one really helped when I first started my job and was feeling under-qualified:
“I chose you before I formed you in the womb; I set you apart before you were born. I appointed you a prophet to the nations.” (Jeremiah 1:5)
When I’m feeling anxious:
“My peace I give you…do not let your hearts be troubled and do not be afraid.” (John 14:27)
And when I’m feeling tired heading into work:
“I will refresh the weary and satisfy the faint.” (Jeremiah 31:25)
Scripture is so powerful, and I wouldn’t say that unless I didn’t know for myself. Try it; strap yourself up with some scripture. This world is so negative sometimes and you really have to encourage yourself. I think there’s no better way to do this than with scripture. Go ahead and give it a try!
God bless ;)