what does it mean when someone tells you to work on yourself?

i've been having a pretty tough time this year, i sold my horse, i got beat by two votes for president of my 4-h club by someone who wasn't even at the election meeting, my sorority big sister (who is one of my best friends) graduated, and this year in 4-h i started collecting pop tabs for the ronald mcdonald house, and i asked my head adviser if i could extend it to the rest of the horse clubs in my county, and she kinda dismissed it, like it wasn't a good idea, and i asked her about it again after the meeting if i could go to horse council meetings with her to bring up the idea, and she kind of snapped and yelled at me saying that all the people would do is listen, no guarantees that they would donate. and that really put me on the edge, and made me really frustated, and i feel like if one of the other kids that she likes better would have brought it up, she would have been all on board with it, i texted my 4-h big sister after the meeting, because she wasn't there, explaining what happened, and that i feel like a black sheep, shunned and put in the corner, i use to really love going to my 4-h events and now i feel like i'm walking on egg shells everytime i go to anything with them, so my big told me to take my mind off of 4-h things for a week or so and to take some time and work on myself. what does this mean? to work on yourself? thanks