You are stuck between two options--One risky and other one is much safer.
Lets play with an example like you have to purchase anything online
Your heart will shout YES coz it will say thats perfect and it'll completely fit your wardrobe. But at the same time there will be a clear NO by your mind and it'll solidify you not to purchase online and save your money.
The other side of this debate is the fact that your rational decision-making processes can have a pretty good track record. You may not remember the times when you followed logic, because they mat have been as memorable. It’s also possible that when reason prevailed, it told you not to do something; therefore, you have less to remember.
Listening to your heart is something that will more likely hurt you than not, especially if you’re under any kind of time pressure. Once you’ve had time to sort through all the factors, both rational and irrational, your judgment should be clearer. Decisions to take risks may in fact benefit you, but just take your time, whenever possible, to gain the most fulfillment from those decisions.