How do you measure success? Is it by money or is it by how well you did a task? Or do you compare yourself to someone else? If it is the last one, then you may get hit with envy. Consider, comparing your work to what you have done in the past.
We all get pulled in various directions. But do you realize that when you say "yes" to an idea or event, you are also saying "no" ? Until you can make another you, you can only be at one place at one time. You can only do one thing at one time.