First of all many many congratulations to my friends who cleared CA Final and became CA and to my friends who couldn't I will just say, "Dont loose your heart, get up and fight again".
Life is never easy. It wont be even after you become CA. Things will get complicated in career choices, personal lives; You may decide to start your practice with no family backup. Initially it will be struggle. You might end up cursing yourself when you will see your peers getting handsome salaries in corporate jobs or some working in CA firms and getting much more exposure than yourself. People around you will start their taunts again. Your confidence may take a hit. Nobody will be able to understand your career choices than yourself. You might be in a relationship and your partner may leave you saying "he or she is looking for an established person". Life will seem to hit the rock bottom again.
The answer to every problem will lie in the fact that "Be your best friend. Nobody will understand you, if you wont understand yourself".
There is no bigger promise than the promise you make to yourself that you will succeed. People will come and go, things will change drastically at times, but you have to be there for yourself all the time. Only you are your trustworthy companion in this world. So believe in your dreams, believe in yourself even if no one believes it.
I have seen and experienced people change colors like anything, even the ones who promised to be around you forever. No one is permanent in your life or in this world. Just accept this fact and work for your betterment.
It's your life and live it the way you want to and not how others want you to. Do everything with full passion and results will follow, if not now then after some time, but they will for sure. Be persistent with yourself and with your goal. Take risks, don't settle for anything less than what you want. Feel that adrenaline rush. You wont get this life again. Make it count.
Have faith in your abilities and discipline. Stick to it day in and day out. Your efforts will drive you.
All the best!