You'll know you have the right therapist when after the first few sessions you feel comfortable enough to tell them things you wouldn't tell anyone else. It's important in therapy for that rapport to be built from the beginning and that you as the client feel comfortable enough to share what you need to share. You shouldn't feel judgement from your therapist and you should be able to trust the advice your therapist provides. Therapy isn't about advice, don't get me wrong, but to truly implement the changes that need to be implemented to improve your life you need to trust the person giving the advice. Your therapist should have your best interest at heart and truly listen to what you have to say. The therapist should be willing to meet you where you are in your world and attempt to see the world from your perspective to truly understand what you have been through. You need to feel comfortable in therapy to be yourself and say what's on your mind. Therapy shouldn't be something that should be dreaded but it can get uncomfortable depending on the depth of the things being discussed.
It's not really a question of whether you have too many issues for counseling but more what would you like to work on in counseling? You control the direction of sessions and depending on how you're feeling in a particular day can predict what direction that session takes. If you want to work on all the issues you've listed it will just take some dedication on your part to see through the counseling long enough to find a resolution to each of the issues that is satisfactory to you. You work at your own pace in counseling and it does seem like you may be overwhelmed with the ever-growing list. But you may just be in search of self improvement and making yourself better, which is a great thing. It seems as though you may need some form of resolution to what has happened in the past and to work through the trauma you have experienced. That may be the base of your counseling needs in which self esteem and depression/anxiety may fall underneath it as well. If you want to start counseling don't let what you need to work on overwhelm you. Find the counselor that best fits with you and together you both can tackle any issue.