Context: I'm a 23 year old junior software developer at a SaaS shop.

Due to economic circumstances I haven't been able to attend much college -- less than a full year. I recently came across ~$15k as part of an inheritance deal and am split between investing in furthering my degree, or using it to self teach where it has the potential to stretch much further economically.

How much am I wounding myself by not obtaining a degree? Is it possible for me to progress in this field on my own?