Any room for the kitchen sink?

Has anyone tried taking a small bag out? I attempt to and then realise I need this, this and this. A book for the tube, headphones to listen to a podcast at work, hand cream, lip balm, phone, purse, tissues, the list is endless. I feel like if I carry all my items in a backpack my back hurts, switch to a shoulder bag, my shoulder hurts, I see a pattern emerging here. What’s the solution, I can’t part with essential items, can I ?

Big bag, small bag, you will find that something is always missing you should have, could have taken so I’ll try to ditch the heavy items for now because nobody likes lugging things on a daily basis.