Don't worry about it, that's why God gave us the Holy Spirit.

Romans 8:26

Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.

I have kids, there's many parallels to how God treats us and how the father in a household treats his children. They don't always ask correctly for stuff but I still know what they need and if they've been respectful I'm happy to give them whatever they want, so long as they can handle it. As long as my kids love me, it is my great pleasure to give them everything.

Don't worry about praying perfectly, God knows your wants and needs. If you want to do some work for him, go tell someone in your life about what his son Jesus did for them. That's the labor he wants from us.