Is it ok so say this in an interview ?

well its not wrong being honest but your honesty can be misunderstood, It really depends on the interviewers perspective of looking at things. But in my opinion in any interview you should say something only if you are specifically asked about it. Anything that you say out of topic could be considered as a negative point. Instead of going on and on, find an opportunity in the interview to say what you want. You would definitely asked to say something about yourself or introduce yourself, grab the opportunity and say what you want but be short, specific and simple, you dont want to look like you've rehearsed what you said :) And if you have the attitude of a hard-working and sincere person, you dont need to say it in words. Good luck.