The sun represents our vitality and our conscious ego, the self and its expression. It establishes our will to live and our creative force. It is associated with spontaneity and health. A well aspected Sun will describe a person who has heart, who cares for others both in general, and at the personal level. A poorly aspected Sun will describe a person who either has much more difficulty accessing this love and caring ability. In your chart the position of the sign represents your life purpose and style in which your make your mark in the world.
Sun Opposition Ascendant
Those with Sun on the Descendant can sometimes seem to 'give' their Sun to others, in as much as they give power to other people. I have particularly noticed this with Sun-Descendant clients, for they seem to take more than usual notice of what might be said during a consultation, tending as they do to ascribe far too much importance to the views and opinions of others at the expense of their own and frequently looking to other people to make their decisions for them. The astrologer-client relationship, like any other counseling situation, is based on equality and sharing. If one person could be said to be more 'important' than the other, then that person is clearly the client. In the most extreme instances, the person with Sun in the 7th, when in the role of client, is reluctant to accept this fact. He / she gives away his / her importance, fights shy of the limelight, and tries to manipulate the situation so that the counselor is centre-stage and the one pulling the strings in the client's life. Where this does happen, it is usually repeating a situation that has been created in their other partnerships, whether personal relationships or working partnerships. All too easily, the Sun-Descendant person can believe that his / her life is fated and that he / she is merely a pawn in the hands of the heavens or of others' superior power. This is not always the case, of course, but certainly Sun-Descendant, rather like a Sun Libran, does like to share the decision-making process and does like someone to do things with. Relationship and partnership are very important to this type. It's a good placement for people who work in a partnership, and indeed for anyone who works in a one-to-one situation. In some cases, the Sun-Descendant might say 'I am nothing without a partner; life has no meaning without another person'. More positively, Sun-Descendant people might say 'I find myself through close interaction with another person'. This is a very good placement for analysts, therapists and the like. They can find their identity through close interaction with another person, and, similarly, in a one-to-one situation they can enable others to shed light on themselves. They may even achieve personal distinction and recognition through relationship. It's a common placement in the charts of lawyers too; they often work in partnerships, and on each case they work in partnership with their clients; usually, also, lawyers are involved in litigation with 'open enemies', and are working, ideally, for justice and fairness. The father of the person with Sun on the Descendant was usually viewed by the individual more as a husband to the mother than a father to the child. Sometimes this is literally true, where the father-figure in the home during the formative years is not in fact the biological father; but usually this is more the psychological experience than the actual one. Father was concerned with being a partner (in the marital or business sense) above all else. If the Sun is in the 7th house, the individual will seek through marriage a relationship with the father archetype, either by playing the role of father or by expecting the 'other' to do it for him / her. If the Sun is in the 6th house, the individual considers working partnerships to be especially important. In any event, the individual is usually 'fathering' others in the sense of providing some sort of identity for them. Descendant-Sun people are proud of their partnerships. This is the type who, aged 70 or 80, can be found linking arms with their spouses and stating proudly that they have been married fifty years or so. It is not that relationships are more likely to last with the Sun conjunct the Descendant, or that it is necessarily a good thing if they do, or even that the relationships will be necessarily better than any other people's. But with this placement relationship tends to be the most important thing, and something of which to be proud.
You will be concerned with meeting other people and you can learn about yourself through the way you interact with people. You need to be aware so you can see how others are being affected by your behaviors. There may be ego conflicts, and you may have to work with people you normally do not like. Dont avoid confrontation but get problems out in the open. It is a good time to consult others for advice and you will not benefit from keeping to yourself today and in most case you will not be able to.