Do you have 26 minutes? Then you should definitely listen to this podcast on market positioning for translators, an interview with Ralf Lemster conducted by Tess Whitty on the Marketing Tips for Translators website.
Ralf really knows what he is talking about – I know this, because I know him personally through the BDÜ and have worked for him (because of my specialization in classical music!) -, so that half hour will be well-spent.