As was - and is - mine. Therapy OP - a lot of it, on your own. Years I mean, proper therapy, as some of us have had to due to primary, and very damaging, relationships. If money is an issue, you can access good therapy through eg womens organisations for a very low fee.
so as it happens I do understand the inability to make decisions, the complete lack of confidence in anything at all. Your father/parents have no doubt left you with a very damaging legacy, please do everything you can to make sure you minimise the impact of that on your children. Don't use them for anything at all, particularly emotional support - our children are not meant to give that to us: if (?) you had that in your childhood it will be hard not to visit that on your own children, but don't. It is extremely damaging for them.
In the privacy of the therapy room, please tell the truth - to yourself, if not your therapist as your learn to trust them. Be as honest as you possibly can. it will take time - as you may be so used, from the core, to not telling yourself the truth - but it is essential to do all you can to stop and uproot the legacy that may have been handed to you from being handed on to your children.
it may take a long time to turn the ocean liner around and to get it powering in a healthy direction, to take responsibility and not blame, armed with the facts; but turning that wheel is a start and a must - do it for your children if you don't have, or lose, the impetus to do it for yourself. There are many books around that help to address dysfunctional ways of relating, not least the many books on codependency (good link above). Some experts argue that codependency addiction is at the root of all addictions btw re a lot of other addictions spawn off it.
I wish you all the best, that the revelations you receive along the way, though sometimes painful, open up your world, giving you what you never dreamed you could have - freedom to make your own healthy choices and to benefit from them, which will automatically benefit your children.