Is it normal for my kids to drive me crazy??

I am married and have three children, they are all 2 years apart, my youngest is 4. I love them to death and everything positive that I do is for them. I try to give them everything they need and more. I want them to have a great childhood. Sometimes they just plain out drive me crazy! I want to rip my hair out and scream!! I don't take out my anger on them because I know better so I walk away. My husband tells me that I'm too lenient when they misbehave but no matter how much I talk to them and ground them or take their toys away, they always find a way to do get in trouble so I get so angry and I just walk away because I don't want to deal with it when im angry. Sometimes I don't want to deal with it at all!! I just sigh and let it go. I feel like a bad mom at times because I feel guilty for feeling like they drive me crazy. I don't have family to help out or give me advice. It's only my husband and I which makes things difficult. My husband is helpful and supportive but I'm home with the kids for the majority of the time. I just tell myself that they are just kids and they will grow out of it. So is it normal to feel like this??