Is There a Common Denominator for Not Being Able to Pray?

I think a lot of us feel like there's a certain way that we have to be able to pray. I was going to say young children having that rhythm with kids in bedtime can be helpful as building in some of those times for prayer. For me a big one, it's one where my theology doesn't necessarily match how I live it out. Where I tend to think that if I have not done a particularly good job walking with the Lord during a particular day then he doesn't really want to hear from me. Like I don't feel like I have any business coming to him when I'm in prayer and so there's a shame or a guilt factor that I know should not