It is better to do one thing well than ten things hard.
Samuel Lee Bowman
Many who are hard at it, who look busy, might not be doing anything really well. However, if you slow down and take the time to do fewer things well you will succeed, in fact you will not have to seek success. Success will come looking for you, more as an afterthought rather than something sought.
Read Deuteronomy 28:2 from the Bible (Basic Instructions Before Leaving Earth)