Using your intellect like that is going to very probingly bring up a lot of resistance and irritation.
There will be conflicts in the direction your thoughts are heading in - some maintaining your self-image and progress in the world, and then 'who am I' constantly belittling and exposing your deeply lodged earthly drives, which will fight to defend themselves.
Too much self-enquiry drove me mad also. Now I practice advanced yoga practices and listen to holosync. I still work full time and keep myself socially adjusted. And still the consciousness of silent joy, free of time and space, comes to rest in me. There are times of the day for me to draw inwards honestly, and times for me to expand outwards and allow the goodness of bliss consciousness simply to saturate my normal earthly self - I experience a seperate self and all that comes with it, but a stable, earthed, joyous energy saturates my feelings and thoughts and actions.
Perhaps consider the mind a container of water and dirt, whereby water represents the natural state of quietude, and dirt represents the afflictions of the world. If we sit calmly for long, the dirt eventually settles to the bottom so that we see the container well. Perhaps this radical self-enquiry REALLY SHAKES UP THE DIRT, so that when it does settle it settles far more honestly. Perhaps you have shaken up enough dirt for now, and now it is time to effortlessly just let things settle for a while, a more honest, friendly, and happy container. And when you feel comfortable and grounded in that, shake things up a bit more. Always taking the time to rest and gather your intent and being into calm.
You're not going to obliterate that trunk so quickly. The intellect is a tiny saw. Inner silence is the trunk itself, the saw, the whole forest, earth, universe, and beyond.
Hope this is of some use to you - just throwing it out there.