Thank you for contributing this spell, Willibri12.
Besides that I'd like to say that aside from such spells improving patience requires self development and a psychological progress which takes some work.
For anyone who has been recently trying to improve patience, what I can recommend is relaxation. Relaxation fosters patience and understanding. It gives you the "time out" you need to wind down from the day's many activities and switch into "neutral" - that wonderful, non-judgmental state where all things are possible, and you can feel good about yourself.
Along with patience, the more thoroughly you can relax while remaining consciously alert, the quicker you can unleash your heart's ability to feel and your mind's ability to create - hence, your psychic potential.
Anyway... To improve your patience work on self development and use practical techniques. And you may also find this spell useful for the motivation of it, feel free to use it along with relaxation and self development.