Friendships:

The righteous should choose his friends carefully,
      for the way of the wicked leads them astray. Prov 12:26 NKJV.
When setting boundaries in our lives one of the first things we must do is to be more particular as to whom we allow into what we call our circle of friends. I found a good definition on Friendships, it is a term used to denote co-operative and supportive behavior between two or more humans.  In this sense, the term connotes a relationship which involves mutual knowledge, esteem, and affection along with a degree of rendering service to friends in times of need or crisis. Friends will welcome each other's company and exhibit loyalty towards each other, often to the point of altruism. Their tastes will usually be similar and may converge, and they will share enjoyable activities. They will also engage in mutually helping behavior, such as exchange of advice and the sharing of hardship. A friend is someone who may often demonstrate reciprocating and reflective behaviors.
The last two words in that paragraph are the best two, reflective behavior! We must be very careful who we decide to spend are free time with. Do not be deceived: “Evil Company corrupts good habits.” 1Cor 15:33 NKJV.

Whoever has no rule over his own spirit
      Is like a city broken down, without walls. Prov 25:28 NKJV.
Now where would we be without self-control it is a key factor in setting up the boundaries in our lives. It is like the mortar that holds the stones together in our wall. Without it the stones would come crashing down at the first big wind storm. Now Self control is perceived in a few ways. One of which is philosophical and might be described as the exertion of one's own will on one's personal self - their behaviors, actions, thought processes. Much of this comes from the perception of self and the ability to set up boundaries for that self. Self-control can be expanded into several different areas, ranging from respect to willpower. Self-control is therefore centered in the ability of a person to exert their will over the inhibitions of their body or self. Paul describes self control in the epistle to the Galatians (5:22), as one of the fruits of the Spirit. In the epistle addressed to Titus (2:6) he instructs him to 'Urge the younger men to be self controlled.' The Apostle Peter describes an increase in self control as fundamental to the salvation of a Christian (2 Peter 1:5-8). Now without this key ingredient we would be like a city without walls and a city without walls anything can get in, and anything can come out. We are on a journey just like the Israelites in the old testament, It is true that we are all a work in-progress we will make a lot of mistakes, But we must be diligent in our efforts to keep all of the commandments statues and precepts set down by God, We must love him with all of our hearts souls mind and with all of our strength, And if we do these things, We will find it very easy to live by every word that proceeds out of the mouth of God.