I feel like a failure 😣

I don’t know how to get though this “phase” my son has been in for the last week or so. It’s most likely just teething bc his molars are coming in, but I don’t know how to handle all the tantrums. It seems like everything I do (or don’t do) causes him to scream at the top of his lungs, and I don’t know what I can do to correct it. He used to go down for naps and bedtime so easily without a fight, but now he cries every time he goes down or wakes up, and when he wakes up he’s still cranky for the rest of the day. I feel so helpless and pathetic, I just wish I didn’t feel like I was losing my mind.