I have been listening to a lot of artist's podcasts - too many, there are a million of them out there! But a couple of phrases have stuck in my head from other nuggets of wisdom I've heard recently. (I will credit them here if I can find my bitty notes, but both have recurred in a few interviews.)
One, regarding subject matter, is "Pay Attention To What You Pay Attention to" (sounds obvious doesn't it?) and the other is "Work in Series". I think both of these will help with frustration at myself for continuing to have such a diverse range of styles, medium and subjects. I dread the question, "So, what do you paint?" and should really have a ready reply by now!
Something that keeps stopping me in my tracks with a longing to capture them, are the groups or pairs of (usually) women in local streets, chatting, sitting or walking around - wearing bright colours, with umbrellas, children on backs or otherwise attached; mostly in summer when shadows are strong or people are out and about later in the day. Such a warm, convivial feature of Johannesburg, I've painted and sketched these scenes often but haven't found THE way to do them that isn't a rather slavish copy of a photo, but more finished than an urban sketch. I did two versions of this group - dressed all in white in this case, walking home from church through the leafy green streets of Emmarentia - trying to keep to strong, simple shapes, the results not what I'm after yet... are they ever though?