Have you given yourself a break? Do it!
It is easy to see a tantrum and feel as if you have to "fix" it. It is easy to go into a full emotional process just to breath at times. Remind yourself that you are doing a great job and give yourself a pat on the back.
We teach by modeling our life the very most, so they are looking at how hard you are on yourself and whether you like it or not it is also being learned.
If I could go back to my 18 year old self and tell me to relax a little more and not be so hard on myself, I would. I try to do it with every mistake and failure because they are teaching me to succeed.
You are amazing and if no has said it today, look in the mirror and say it now, "You are amazing!"