I was just reading an article on the most celebrated French jazz pianist Martial Solal. When he talks about one solo disc he made, he says, "I liked the atmosphere while I was recording. It was a very dark room with an excellent piano, a small studio and I played non-stop. It was a very concentrated effort, and this is very important when you play: to have total concentration and not be disturbed by anything. Then you can really get inside the music and play without preconceptions, allowing your mind to travel far away."
Praying to God is like that too. It's best that we find a quiet place with nothing to disturb us and pray "seriously." We concentrate on the Lord and pour our heart out. We laugh, cry, talk, question, petition, praise, or just contemplate in silence as the Spirit leads. There is no holding back, only love and trust. This is true heart-to-heart communication with God.