Jealous-eee

I'm a jealous mom. I said it. No hiding. Truth talk here.
Its probably my biggest flaw and not just in motherhood. I've spent the majority of my life unsatisfied. I look in the mirror and I don't see who I am, just who I am not.
These feelings sometimes become magnified through my children and those mother's around me.
The last few days have been really hard (here comes my whining, so stop here if you don't care). Cami regressed in potty training about three weeks ago and she averages about three or four accidents a day. So I help clean Cami and the floor while Emily usually starts crying. Now I know my children's choices are not a reflection of who I am, but in the last eight weeks of my maternity leave, I've failed potty training her. Parents around me do it in three days and some of them whine about a week or two. I've also had numerous parents assure me that regression is normal, that does not help. I hate the idea of her going to preschool and/or the babysitters and peeing/pooping herself.
I've also been trying to finish up the book I started with all of my dad's writings. At the end of the book, I'm putting a photo history together. Yesterday I ran across a picture of him from my wedding, smiling like he always did. With his photo eyes looking at me, I felt sure he was disappointed. I don't lead the life he wanted for me. I'm a full-time working mom, in a field where my creativity is not used, married to a man who does not share my testimony/beliefs, I struggle to not feel empty each Sunday (going through the motions because I know the truth but I don't feel it). I'm sure he wanted more for me. He loved me.
This is where the jealousy comes in. Seeing those who have these things and more each week. Everyone struggles, I know that their struggles may not be visible. I don't have a lot of help in my life. I've worked incredibly hard to get where I am, but is that enough? Am I enough? Is this all I will ever be?