Really, what I'm starting to realize about learning music is that it's all about community. Music doesn't "run in my family", but the fact that so many of my siblings and both my parents played guitar really opened me up to a lot of things. People that struggle often do not have any sort of network to fall back on, and may think that lapses in motivation reflect on them, when in reality lapses in motivation are part of life. A community of kind, patient musicians will help you back up.