It's really good to hear that others are struggling with impatience as well.
For me it's really that what I want on a really deep level I want right now, which I think is no big surprise cause right now is the only time I actually got. Sometimes you hear it's wrong always to aim for instant satisfaction, but if you f.e. want to be healthy you want that right now not in ten years to come.
And then I do get really impatient when what I wish for on a reasonable level seems out of my hands, cause I like being actively in control of my life. So I get this feeling that I ought to be able to do something, and feel the need to be out there shaking some trees to make it happen. But whenever I did just that, I seemed to spend my energy uselessly and either ended up simply frustrated cause I seemed nowhere nearer to my goal than when I'd set out, or I sometimes actually felt as if I'd pushed its realization even into a further distance, which -depending on the level of emotional attachment to it- caused me to feel really miserable.
And yet I still get this impatient feeling, maybe I just wasn't made to sit by and watch the river run through, but now I try to channel the energy bubbling up in me in another direction, and put it to some constructive use in ways that do seem reasonable, so then I at least do get some nice positive side effects while I'm waiting for my wishes to come about.
I can't will away this impatient feeling, which feels like having too much energy and nowhere to direct it to, so channeling it a way that looks open is the best choice for me.
