Think of it this way: there is never a doer, even when thought says there is one. This knowledge can set you free. Don’t worry if it seems like you’re a doer. It’s just like the sun rising and setting – it seems like the sun is orbiting the earth, but the knowledge is there telling us that it is the earth that is orbiting the sun.
Don’t worry too much about the appearances or whether or not you get lost in thoughts. Sometimes, in fact very often, thoughts needs to express themselves, and in expressing themselves you can learn about yourself on the human level/level of the mind. A bit of worry can be quite good, as it helps us prepare for future events.
When the doer* is seen to be an illusion, an imagined fiction, the sense/feeling of being a doer may still continue. The sense/feeling of being a doer can arise like any other phenomena arises.
And notice – it arises spontaneously, meaning there is no doer there doing it. You see! It can be seen that even the sense of being a doer is something that has no doer behind it – it just happens, by itself.
So, in my daily life I often feel like I’m doing things, but there is an understanding there that there is no doer-entity doing it. It is all just happening.
This is the difference between experience and knowledge/understanding: I may feel like a doer, but I know/understand I am not a doer.
It is similar to realising the sun does not orbit a stationary earth, even though the appearance of the sun rising and setting each day continues. Or if you realise that a mirage is an illusion, the illusion persists even when not believed in. The sense of doership can continue even when the understanding ‘there is no evidence for a doer’ is present.
*By doer I mean the notion of being a separate entity which creates or authors thoughts and actions