Trusting the Holy Spirit is not an easy thing to do. Without the help of the Spirit it is impossible to trust the Holy Spirit and rest in Her.
Each time you feel stressed, it means you are still in control of your life because a life full of the Spirit is a graceful life.
When you trust the Holy Spirit you can enter Her rest. If your life is not blissful and graceful, it means you have missed the way and you’re still in your own work and labour.