If you are going to get into Kiruv, just be aware not everyone is into relgion as you are and there will likely be more failures than successes and there are things you just wont be able to compete with.
for example If someone has tickets to a concert Friday Night, You are unlikely to convince them to give it up for shabbos.
If you cannot deal with such things, perhaps Kiruv is just not your thing. You will have to celebrate the smaller victories.
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