Do you have to do a CCIE to be a good network engineer? Of course not. But if you decide to chase it, you have to want it, and want it badly. If you have other pressing commitments in your life, then maybe leave it for another time. During my journey, my wife and I had our first baby. This was life changing, but I was able to keep up my study (albeit at a slower pace). Some people will meet their significant other, and forget all about studying. This is perfectly normal and you should not feel guilty. You need to be at the right stage in your life, and have enough motivation to successfully see this through.