It seems like the cashflow situation will rule out some options, at least for the moment, like boostrapping etc. Contracting could be a temporary option, esp for US companies that need in-person support with good language skills. This would blunt some of the competition from abroad.
Regarding learning "out of the tar-pit", it's hard to give out specifics without knowing more details about your experiences. But it might be worthwhile to reach out to other senior engineers in your network, not to ask for a job, but to ask for advice about switching from entrepreneur/founder to employee. It could be a good way to build rapport and identify what you should be learning next.
Your health obviously takes priorty over everything else. Medical problems can really push you into despair if left unaddressed. Money you can always make back later.
Regarding learning "out of the tar-pit", it's hard to give out specifics without knowing more details about your experiences. But it might be worthwhile to reach out to other senior engineers in your network, not to ask for a job, but to ask for advice about switching from entrepreneur/founder to employee. It could be a good way to build rapport and identify what you should be learning next.
Your health obviously takes priorty over everything else. Medical problems can really push you into despair if left unaddressed. Money you can always make back later.