Let your heart rule your head
Definition 1 of 1
Pro Tip 1/3Emotion Over Logic
This phrase suggests decisions based on feelings rather than rational thought. Useful in contexts discussing passion-led choices. 
She decided to travel the world instead of taking the job, letting her heart rule her head.
Pro Tip 2/3Figurative Expression
Remember, it's a metaphorical phrase. 'Heart' symbolizes emotions and 'head' represents intellect. 
In love, sometimes you have to let your heart rule your head.
Pro Tip 3/3Risk of Regret
Be aware that this phrase can imply a possible future regret for not thinking things through. 
I bought the old house on a whim, letting my heart rule my head, and it became a money pit.