You're lucky man! I just wrote a post here about this problem when you just start your career and don't find the right company with the right projects and mentors, you really feel disappointed.
I too was lucky enough to have had a couple of mentors early in my career that, IMO, changed everything. Because of this I have taken it on myself to be a mentor when and where I can. I find myself, at this point in my career, managing a large team of UI devs and have the opportunity to help them grow and learn. I feel it is my responsibility. Kind of a "pay it forward" mentality. It's also personally very rewarding.
In the end, I feel that we are all responsible for mentoring each other, and believe we all have something we can share and learn from one another. As practice lead, it's something I expect from my team and have zero tolerance for those that feel they are above others and not willing to share and mentor.
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