You yourself can know your intrinsic value.  The utility you generate and ultimately invest in the society for social purpose  is your basic utility value. Utility found, generated or used for self-interestedness or  self defence may be your strength but in the society your contribution has to be judged by the  surplus utility you generated and did not utilise the same for your own cause and diverted voluntarily for the welfare of the society.
Utility contribution of each individual  makes the society healthy, wealthy and wise. Utility consumed disproportionately is symptom of decay.  Degenerating utility has to be checked and for that each of us need to be regulated. Regulating norms  are laws and regulated behaviour is the social expectation.