Why do you need to sell it immediately ?

You need to look at the following

• is the token listed on exchanges? if not, when?
• what is the status of the project and the team? if you see progress, don't sell. hold as the value will be higher
• if you buy with small amount, hold for long term as there is no real value if you sell. however, if you put a big investment, think how you can manage the loss if it happen