I have some thoughts on applicable methods.

One action that can help you obtain more control over your experiences is to actively control what you are feeling in any moment - using the feeling of appreciation or excitement as your anchor point. You can do this by recalling an experience you had which filled you with either of those emotions. Go beyond just remembering and try to re-experience it by feeling it also within your body - how it felt to laugh, how your body feels when excited, the surge of energy, the wide-awakeness, etc. Get to the point where you can re-immerse yourself in the experience of it. If you've had no experiences that you are able to do this with, then you can use imagination by conjuring up day dreams that excite you or watching a movie that excites you, gets you into a state of appreciation or excitement. You can even create a word or symbol that you look at when feeling this way until you've done it often enough that just looking at the symbol or thinking the word immediately brings the sensation of appreciation or excitement back. Eventually, you become so familiar with the sensation of either emotion, that you can recall it at will immediately without needing a symbol or the effort of recalling the past.

Once in either emotional state, take a quiet moment to memorize the sensations you experience within your self - how it feels, like you are wearing a suit of excitement or appreciation. Like you are emitting an energy - become familiar with the sensation of it, it can be your anchor. This will become your predominant energetic state, and when you deviate from it, you will notice more quickly (as in be in conscious awareness of how you are reacting to things), and you will be able to bring yourself back to the preferred state quickly. Things brings you in control of your energy.

This new energetic state will become your dominant state. When you deliberately bring yourself to it and focus on it, you will be making it stronger which will attract more of the same energy to you. Since at any time you could be emitting a complex arrangement of frequencies, this controlling of your predominant frequency would begin to influence others around you as they begin to resonate with that frequency. It would be like hitting a tuning fork and that tuning fork begins to make nearby tuning forks vibrate, although much less. If other tuning forks nearby are vibrating at a different frequency, they could influence the original tuning fork unless the original one is itself hit continuously so it can emit its own frequency.

This makes sense more if you imagine yourself and every person to be a source of energy. You have the infinite spectrum of energy available to you and your system of beliefs is the filter that you place over this infinite energy to filter out all but what you believe. For example, someone can believe elves live in the center of the Earth, but you don't believe in elves or a hollow earth, so you filter out this energy. As the other person resonates with this belief, it cannot trigger a harmonic resonance within you, because your belief filter has blocked this frequency - there's no energy coming in at that particular frequency to resonate with. If you open yourself up to the possibility, then your filter may open a bit and you start perceiving information about elves or a hollow Earth. Then it is your choice whether to reject it or go with it (this is just a fun example). Every belief is a choice. Every interaction you have with anything is a reflection of a belief. All of it is attracted to you based on the energies you radiate. You stand at the center of your own universe. You can never truly know what anyone else perceives because all of what you perceive is you - your reflections. Interactions with other people are possible because at least part of your energies are in alignment - they resonate. Change this energy you are emitting, then the interaction changes. That's where the control of energy mentioned above comes in handy. Go back to this energy, change the way you respond to things you perceive based on how you would prefer to respond, not based on your reflexive reaction - this reaction is betraying a belief, a belief that you can change if you can recognize what it is. For instance, if you want to punch someone in the face because they tossed an insult at you, then let your imagination do it so the desire passes through you, then recall your anchor point emotion and proceed from there. This is your point of inspiration. Your inspiration will lead you where you want to go.