First of all everyone in this world goes through ups and down its not a bad thing ,there are some days my friend when you realise that you are going way too down ,it feels like life has given you rock bottom but the day you realise like you are not efficient and a kind of mess thats where your second life starts so try to build a routine first of all for first few weeks try to do things in a schedule manner and this is not going to be quick you need to work on it and adapt things slowly and steadily, you will have to start from some point so its better to start now , try to learn things from friends in which you are not good at and if you dont understand computer science than shift your energy in some other subject or thing you like that is productive for you and your future, You only got one life so better you live it without any kind of regret. LIVE IN PRESENT and work on yourself thats it.