If you really believe in this saying, you’d be a masochist. Think about it.
People use this phrase to push themselves or others through tough times, to motivate and encourage but realistically how can pain motivate? I think this belief may be the cause of many failures.
I believe that pain can lead to growth but is not necessary for growth. So it’s completely counter-productive to think of pain and gain in the same sentence. Thinking of troubles and pain will only flatten and de-motivate you, stopping you in your tracks. Instead, think of the smoothest and most rewarding path to achieving your goals.
Question some of the beliefs that you have carried around with you (like this “no pain, no gain” belief) and ask if they are having a positive impact right now. If they aren’t, shed them.