What is a personal philosophy? It could be the code for living, or the principles by which one lives. It really comes down to being who you are, and living by some code.
For me the simplest principle is one of love of life, and respect for the universe and all the things in the universe. This means don't kill something unless you must (even bugs). Don't throw trash out the window. Be nice to other folks, even when you have to be firm. Live according to a gentle nature. That's pretty much it. Everything else is more or less related to these concepts, though they do not necessarily spring from them.
While I cannot say I'm of any particular religion, I think Jesus put down a very good and very basic pair of rules: love God with all your heart and soul, and love your neighbor as you love yourself.
You could take God as either the absolute master of creation or as an expression of creation as a whole. Either way disrespecting the world in whole would not count as love for God. So throwing trash or cigarette butts out the window is wrong, as is destroying a whole species for the sake of something of lesser value.
Loving your neighbor doesn't stop at your literal neighbor. He meant anyone, anywhere. Hating another person, of any color or race, religion or faith or lack thereof, or for any reason is a sin. Certainly harming people for those reasons is wrong. Even if you think homosexuality is wrong, remember that Jesus Himself sought out prostitutes and thieves and other criminals, noting that harming them was a sin under any circumstance.
Enough about God and Jesus. Even Buddha proposed peace. Vishnu came to the world many times in the guise of Krishna or Rama in order to defeat evil and restore good. Still other religions promote the goodness of life over the rancor of evil.
For me it is simple enough to love the world, or even the universe, from the largest to the absolute smallest, taking only what is needed, leaving the rest, and respecting it all.
I started out writing this with the intent of making it a short personal statement, but nothing is ever so simple. At least not so simple that short, nearly meaningless platitudes could ever render them proper respect.
C.S. Lewis and J.R.R. Tolkien were friends in a circle of writers of their time around Oxford and Cambridge. I think the writing of both exemplifies the simple meaning of good and justice existing for its own purpose. For myself, C.S. Lewis put it best in the mouth of the Lion King Aslan as he spoke to a man who served an enemy of Narnia but who was good in his heart and fighting for his own noble reasons. The soldier feared Aslan would destroy him for serving the wrong master, and Aslan assured him that he served Aslan in his heart no matter what name he used for his master. It wasn't the person he served that determined his fate, but the person he was himself. Strive for good, love God if you will, and love life, and you are doing the right thing.
Some will call this a wimpy or even apologetic philosophy, or they will see themselves as the strength able to dominate the meek. Again, Lewis and Tolkien portray the truth of the so-called "meek". People of character, strength, and love are gentle and kind, but they can also be strong and fell (serious and strong) when they must fight evil, even when they are scared out of their wits. These are people who are light and joyous in times of peace, and mighty and terrible in times of war. Farmers one day, and warriors the next.
So, for me, not thoughtlessly crushing some poor insect, and helping someone in need without expectation of payment, and fighting for what is right against those who would serve only themselves, and picking up the garbage someone else threw away, and hugging your child after being serious about some transgression, displaying strength of character when challenges arise, and showing grace and style and respect are all part of the same philosophy. It's doing what is good and right and just, and fighting what is evil and wrong and unjust or selfish. In a word, love.