“Don't put all your eggs in one basket!” I don't know how you understand it, but for me, I know how important it is for me. If I put all my eggs in the company I work in, I have no ability to say “I quit” now! The lucky thing is I didn't, and I will never put all my eggs in one basket. In fact, I put only one egg in the company, so I can discard it without any hesitation. I still have many eggs in other places. This is why I can still live a good life without they boring job.
What I want to say is, don't put all your eggs in your company, it's too dangerous to do that. Just think about it, what if the company fire you without any warn? That's terrible! You should create other business for yourself when you are working in the company.