We need a sense of the value of time - that is, of the best way to divide one's time into one's various activities.
We shall never have more time. We have, and always had, all the time there is. No object is served in waiting until next week or even until tomorrow. Keep going... Concentrate on something useful.
Any change, even a change for the better, is always accompanied by drawbacks and discomforts.
Your own mind is a sacred enclosure into which nothing harmful can enter except by your permission.