It takes time....People learn and adapt at different rates. Some people need a day or two to learn about and adjust to their hearing aids, most people need a few weeks and others may need a few months. There is no perfect way to learn about hearing aids.
I usually recommend...
Wear your hearing aids for a few hours the first day and add an hour a day the following day, and the next, and the next, until you are wearing hearing aids most of the day. Do not try to set an endurance record! I recommend that you interact with people familiar to you during your first days with new hearing aids. Start in a favorable listening environment (such as one-on-one conversations in quiet) and work towards more difficult listening situations. Let your friends and family know you're using your new hearing aids.
Please do NOT wear them to a cocktail party or restaurant during the first few weeks, thinking "this will be a good test!" It will absolutely not be a good test – it will be very difficult! You should not wear hearing aids in noise until you are very accustomed to them!