Mars (action, also will-power, drive and self-assertion) square (challenge-d) Neptune (compassion, also confusion and self-doubt) can mean- today the drive or go-getter attitude is there, and then it 'dissolves' (very Neptune like) - coming close to the way you explained it. It could also mean self (Mars) discouragement & disappointment (Neptune) to a certain extent, as Neptune (being the stronger of the two planets) might cause a bit lack of lack of self-confidence to that otherwise strong-willed Mars, who's all ready to go fetch what you want in life from the world (placed at the Asc). Since the Asc is involved here, Mars' placement here might mean (pls also consider the main Asc ruler) that people might find you impulsive, even a bit brash perhaps, at times, which might have been more so the case, had Nep, aspecting that Mars, not been there to milden that effect. Neptune squaring Mars can also make you physically (Asc involved) weak, esp, like playing down (Nep) your energy (Mars).
Tell me: Neptune on/close to the IC: did you ever/do you live close to water, do you, or actually, you do live abroad (I see Ecuador, as your 'current location'), don't you? Nep at the IC can also make the person come from a spiritual family/ background-roots/ be spiritual himself, maybe even be 'in that Nep-fog' as in confused or unclear about their background. And now to Mars on your asc, are you slim, may be even tall (though the rising sign would play quite a role, too & can't remember yours)? Sorry about the questions there, just curious, as to whether any
of these 'astro-suppositions' actually manifest themselves).