I think managing money doesnt fully dependent on salary,because if you have habits like gambling or drinking then you cant even manage high salary and one can manage small salaries as well if he spend carefully.
Yes and specially in gambling because i do that also,i dont even know while gambling and loose so much amount in hours and where as if i spend them it lasts for many days and i can do a lot of fun with that amount,so for managing the money better,you must be away from the gambling.