Your feelings of blankness could be coming from a past emotional trauma which you could have suppressed. Not wanting to depend on anyone for any support often comes from a general lack of trust which could have been broken by a close trusted person long time ago. Hence it becomes easier to rationalize or quantify problems while problem solving.
Next Steps
Please see a counselling psychologist for an evaluation and further course of action.
Health Tips
You need to connect with your emotions again and strive for a balance between emotions and thoughts.