One of the ways, to figure out if input from others is valid or not, is whether the information comes as a label, or as a specific event.  If someone calls you lazy, that is simply a label.  It is their opinion.  If, however, somebody says,” Three times last week you we late on deadlines you agreed to.”  This has clear information in it.  It is not made up entirely of opinion.  You will want to check and see the degree of truth and the degree you wish to change your behavior because of it. 

Reject all labeling.  You will never be able to change others opinions and will waste your time.  Labels are mostly cognitive distortions from the person giving them.  Look at events with the eye of discernment.  What could I have done differently?  Do I want to do this differently in the future?  Focus only on the changes you feel will support you.  Do not start labeling yourself and events.