There are lots of important virtues to cultivate, it is hard to pick one that would make the most amount of difference in your life but if I had to pick one other then honesty that would be persistence.
Persistence is ones capacity to continue an activity or opinion despite difficulty or opposition.
Difficulty and opposition it's almost impossible to avoid so without persistence you'd hardly achieve anything. Quitting early is not only going to make it impossible to achieve anything in life but because you're not achieving anything it's going to be really hard to be happy.
I don't know you but I never made a plan in my mind that actually worked out perfect in reality. There is always something going wrong something unpredictable that you didn't even think that it was going to happen or we're able to predict.
This means that difficulty is just a normal inevitable part of life, that is inescapable. It is when you think that this shouldn't happen to you that you create an abnormal level of stress in your life. Not like this shouldn't give you a certain degree of emotional discomfort this is simply your body giving you feedback on how you are performing in the world.
It is when you ask the question: why does this things have to happen to me? Well the answer to this question is very simple, it is because you are alive, this is just an inconvenient of life, not a horror story.
Persistence is the extreme between quitting early and being continuing to spent your time and energy on something that has no chance of ever happening. If you quit early it is impossible to accomplish anything maybe just by luck occasionally. The other unbalanced extreme would be spending too much energy and time on unachievable dreams.
You have to know when to cut your losses, in my opinion this is the only acceptable reason to quit doing something.
This is not always very easy to determined because sometimes you're lacking important information or the experience to take the best decisions. But there is also a reason why we are we order something it's not going so well but we continue regardless the fact that we know that's not going so well, this is because we justify our wrong actions. And this keeps us in a state of denial, which can easily be avoided if you are honest with yourself. This can be achieved through being self disciplined enough to chose to tell yourself the truth regardless that it is not a pleasant thing and it might cause you discomfort in the present, but because of it you will avoid the sufferance that is about to happen in your future.
