Please guide me for my education!?

this year i have passed my 12 th class with76% with PCM. i filled IPU CET BJMC (bachelor of journalism and mass communication)form and got rank 578, i will get a good college. i m also getting a good b.tech college through councelling and stream is electronics and communication . actually i m scared of b .tech studies coz everyone says that we have to face great pressure during BE studies and study is tougher than our 12th class. What should i do and why ? is there any scope in mass communication field?