Lost,
I agree, feel what you are feeling and accept that you are feeling that way, don't hide it and push it away. Sometimes, we need to be sad, angry, jealous etc. It is healthy.
I also appreciate the compliment, hopeful, is not a word I would use for myself, but it shows through easier than the desire to just stop. So my choices are keep going - appear hopeful, or just stop. I have decided to keep going.
You have many qualities that are redeemable, you just have to permit them to come out, it is much easier to argue with others that you are no-good, undeserving etc. than it is to admit that you may be a good person deserving of kindness and compassion. Take one step at a time and you will get there.
Heck, with all my ups and downs, 10 seconds happy, 3 hours angry, 20 hours depressed, I just try to grab onto that happy and hold it until it leaves, I cherish that moment as much as I can.
Once you have reached a balance (I know, with BPD there seems to be no balance and everything seems to spiral out of control and you feel hopeless and helpless) you will be able to see clearly (even momentarily, I love those moments). It doesn't happen instantly, and may take months or years, but it will happen as long as you work at it.
Please keep posting, and by all means keep complimenting others, we all need the ego boost.