Definitely.  Seemingly ‘small’ issues can sometimes be linked to ‘big’ events that occurred previously and which have changed your mindset in a way that blocks you from changing.

For example, a client complained of losing time at work because he was making too many cups of tea, but couldn’t stop this habit. This was a seemingly ‘small’ issue which we eventually traced back to him offering to make a cup of tea for his parents, as an escape route, just after they told him they were separating.  This was a ‘big’ event. 

Years later, whenever he was faced with a slightly difficult issue to resolve, he could not help but use the strategy he had come up with of taking time out to make a cup of tea, which he considered
to be procrastination and time-wasting. Needless to say, when John helped the client to resolve this issue he made sure the client still remained hydrated throughout the day!

P.S. Permission obtained to quote this example