There is no set of circumstances under which you need an advisor, but you do require discipline. There are any number of people who leave Dubai after ten years with nothing to show for it.
Get yourself an Internaxx account. Emirates pilots get "frequent trader" rates on transactions.
Have a read of the Canadian Couch Potato and the Monevator websites.
Start buying ETFs monthly. You probably only need four different ones and you most emphatically do not need any individual stocks nor need to be taking tips from anyone. Pick an asset mix, balance once yearly to retain it and never look at your account in the intervening period or you will do something dumb like attempting to time the market.