Salah is important to all Muslims and it is important that we do what we can to perfect it! How can we perfect salah?
When you pray, don’t read the long surahs in salah so that you get fed up or tired half way through them. Instead choose the short to moderate surahs. This will help you concentrate better.
We need to build ourselves up to make the prayer long. We are not going to do that from the beginning. Prophet Muhammad (PBUH) used to do long Tahajjud prayer because he had built it up over time.