Hi,
As some has mentioned, 2 issues you need to address:
1) personal development, meaning further study or upgrading your
sell. Make yourself more marketable.
2) improve your self-image. (self pity, self esteem, etc).
Frankly, dabin, outdoor sales is hard, but it is also one that
will gain you most experience you need in life, which is,
rejection. You will also have the chance to understand the
character of human, and their buying needs/pattern. So, it
depend on how you look at it.
Just like a glass 700ml filled with 350ml of water, is it half
filled or half empty? Both are correct, but the mentality is
different.
Those who are thankful will say 'thank god (or whatever you
believe in) i have glass half filled with water!'.
But to those who are perpetually complaining will say 'ai ya, I
only have half glass leh.'
So, assess your current situation, see what you are good in, and
capitalised on it, and watch out for your weakness. See where
the market is moving, and steer towards that.
(This, in marketing term is known as SWOT analysis.)
Wish you all the best. :)