I just need to feel that somehow I am contributing the greater good of Judaism by being somewhat observant instead of non-observant. Please let me know if I am making any difference by doing the little I do. I am also Jewish. I was also bar-mitzvah at age 13. You wrote that you occasionally speak improper words.
Nobody is perfect.
So, I think my answer to your question should be evident by now. Any mitzvot which you perform are certainly praiseworthy and should be encouraged. Friday night after sunset, lighting Shabbat candles is no longer a mitzvah but rather a transgression. The same goes for driving to synagogue. That should never happen to anyone.