Its about being conservative with the finite resource of your own personal time and energy that you have in life. We need to monitor the consumption of that energy and where we direct it and recognise how we allow it to be taken from us. We can then guard it closely, conserve it for ourselves and be more efficient with it, otherwise we may never manifest our true desires.
Language is such a crude tool sometimes. The word "quit" is bundled with negative connotation. But actually it allows one to reallocate the finite resource of their own energy! Interpretation and judgement of others in these situations without knowing the deeper personal story involved does not help matters of psychology such as paranoia and anxiety.
I see it as hugely positive when someone gains the strength to quit when the time is right to take control of their life when something is causing them pain and make space for something else they yearn to do. The right decision does not always feel good and the word "quit" really does not help when you are on the edge of doing it for your own personal sanity and you have to communicate it to someone else, one cant help but build preconceptions. In my experience quiting always made time and space in my life for a fantastic new beginning.
A good opportunity isn't necessarily the right opportunity for you. Bide your time, enjoy what you have, do what you love and the right opportunity will present itself when the time is right. But if you're too busy doing something that is not getting you where you want to go, then you wont have time to notice the easier path that could be on offer that does take you where you want to go (and beyond).
We can make the most of any situation by visualising and selecting the best potential outcome that aligns with our true desires and will have a positive impact on us. Then you can channel as much of your energy into that as possible to increase the chances of that being the reality you create for yourself. Its like an investment. If you are passionate about something you will give it more time and energy and it will manifest itself quickly and easily. If you are doing something you hate every day just to get that big house it will hurt every step of the way and you will manifest things that do not serve your true desires (such as needing to keep a job you hate to maintain the lifestyle that isn't serving you).
Effectively.. recognise how economically viable your current endeavour is in terms of your own personal energy. And don't be afraid to cut your losses to make space for something more awesome right now, that will be less painful and more fulfilling. Start taking steps in the right direction.
Multitasking is not the answer, focus on what you love! Quit if you must! Unfortunately you have to find the task manager before you can kill all those other processes!
.. Just my 2 cents!
Peace :)