Adequacy / inadequacy are not physical boundaries but , states of mind , it depends on what you believe . That’s why what is adequate for one may not be so for someone else , similarly what was adequate today , may not be same tomorrow or vice versa
What is a good fashion ?… there is no one all encompassing answer , fitting all . Good fashion for a person is what he / she can carry off comfortably & confidently . That’s why if someone is awkward wearing the trendiest of clothing , it’s bad fashion for him ; on the other hand if Gandhiji was comfortable moving around in one cloth around his waist , that was most appropriate fashion statement for him .
What is good / appropriate donation in quantum or form , for a person ? Here too there is no ‘ one size fitting all ‘ , nor is there any absolute threshold . To me that ( amount of ) donation / charity is your threshold , which after you give away , you should be able to ( mentally ) forget . A good donation for you needs to fulfill following criteria :
It should not create a feeling of ‘ loss ‘
It should not create a sense of ‘ ownership ‘ … it is that amount which should not make you ‘ follow through ‘ to see what use the receiver is putting it to … it no longer belonged to you
It should not create a sense of inflated ego of having done a huge favour ( & in turn to expect the receiver to be ‘ indebted ‘ to you )
It should not create / retain any ‘ attachment ‘ . Your satisfaction / happiness should come from the fact that you did what you wanted to for a good cause , your attachment ended there …. What the receiver does with it is neither under your control nor should be your concern . You should neither have a judgment on how ‘ appropriately ‘ the receiver is using it nor should it make you unhappy , even if you think he/ she is ‘ misusing ‘ your generosity or even is ‘ disrespecting ‘ your gift .
Overall once done , you should be able to forget the details of the ‘ good deed ‘ you did . It should not prompt you to flaunt your ‘ generosity ‘ at any possible forum / opportunity . You should be able to sleep peacefully without a thought about what is / will happen to the object of ‘ your charity ‘ .
For any donation / charity where above criteria are not likely to be fulfilled , you are better off without donating .
Similar is the case for investment . Your capacity to invest is not defined by your affordability or the accumulated wealth , but by your ability to ‘ carry off ‘ the investment in amount & form . That amount is appropriate for you , which after investing ( God forbid not , but should it happen ) if you happen to lose , you should have the capacity to gather yourself up & stand on your feet … you should be able to take that knock without collapsing .