abusive use of goto

Hi, Today while I wwas coding I noted that I almost always use goto in this constructs: while(condition) { switch(some_var) { case 'y': do_something(); break; case 'x': goto end; break; } } end: Is this something not very advisable to do? Well at least that is what an author suggested.. in my short experience I can firmly say that it doesnt look so clean on my code..