Listen to what your investors tell you. Do not tell them what they should buy.
It sounds basic but I have wholesalers insisting that something is a deal - even when I know it is not.
Bring a deal - listen to feedback, learn, adapt, bring a better deal next time. If I do not buy a deal but someone else does - do not come back to me and tell me how I "missed out". If the deal is right for me it may be wrong for another person and vice versa. If you "pitch your deal" too hard then how can I know that I can trust you and that you are telling me just the facts and not "selling me" the deal.
Hard sell, not listening, being arrogant, trying to make yourself to look like you know what you do not, these are all things that lose credibility.
Most of all - I need to trust your word and I need to know that your property evaluation is true.