Brother I truly love you, but their is no way you can follow all the laws of Mosses or even the TEN COMANDMENTS all the time never to break. Thats not being a loser its just acknowledging that their is only one GOOD That is G-d. "Let G-d be true and all of us liars" and " Be ye holy as I am holy says the LORD." Don't believe in yourself but believe in HIM, and HIM only. Please I mean no offense
If we want, we can. And even if we are not 100% of our potential which is obvious, why stay at 2% or 5%, if one is 5% make it at least 10. At 10% make it 20, and on and on, but dont give up on yourself, if you want you can with G-d's help. G-d didn't create us to be animals in a higher form, we are humans and even higher- the children of Israel whom He commanded to do this, and dont do that, G-d says, I give you this day a choice between life and death, the good and the bad, and you
SHALL choose life.
Having the other philosophical point of view, is really the amalik within. That is the philosphy of amalik- that we are nothing but animals/ robots. But Judasim (G-d), says no, the opposite you have a choice and will be responsible for every action, punished for the bad (looking at the different levels of punishments) and rewarded for the good.
And really the amalik/doubts come from the Rabbis say from eating non-Kosher foods (see the circle how it all comes around). Doing some work on yourself, and conquering along with learning Torah this will clarify and open your mind and show you that you can accomplish what G-d set for you to do.
"You are not required to finish the job, but neither are you free to leave off from it" (Pirkie Avot)